3000 (three thousand) is the
natural number following
2999
In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 (21st to 30th centuries). Ongoing futures studies seek to understand what ...
and preceding
3001 3001 may refer to:
* 3001, the post code of Melbourne
Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Austra ...
. It is the smallest number requiring thirteen letters in English (when "and" is required from 101 forward).
Selected numbers in the range 3001–3999
3001 to 3099
*3001 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
; divides the
Euclid number 2999# + 1
*3003 –
triangular number, only number known to appear eight times in
Pascal's triangle; no number is known to appear more than eight times other than 1. (see
Singmaster's conjecture
Singmaster's conjecture is a conjecture in combinatorial number theory, named after the British mathematician David Singmaster who proposed it in 1971. It says that there is a finite upper bound on the multiplicities of entries in Pascal's triang ...
)
*3019 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
,
happy prime
*3023 – 84th
Sophie Germain prime, 51st
safe prime
*3025 = 55
2, sum of the cubes of the first ten integers,
centered octagonal number,
dodecagonal number
*3037 –
star number,
cousin prime with 3041
*3045 – sum of the integers 196 to 210 ''and'' sum of the integers 211 to 224
*3046 –
centered heptagonal number
*3052 –
decagonal number
*3059 –
centered cube number
*3061 – prime of the form 2p-1
*3063 –
perfect totient number In number theory, a perfect totient number is an integer that is equal to the sum of its iterated totients. That is, we apply the totient function to a number ''n'', apply it again to the resulting totient, and so on, until the number 1 is reached, ...
*3067 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3071 –
Thabit number
*3072 –
3-smooth
In number theory, an ''n''-smooth (or ''n''-friable) number is an integer whose prime factors are all less than or equal to ''n''. For example, a 7-smooth number is a number whose every prime factor is at most 7, so 49 = 72 and 15750 = 2 × 32 × 5 ...
number (2
10×3)
*3075 –
nonagonal number
*3078 – 18th
pentagonal pyramidal number
*3080 –
pronic number
*3081 – triangular number, 497th
sphenic number
*3087 – sum of first 40 primes
3100 to 3199
*3109 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3119 –
safe prime
*3121 –
centered square number,
emirp, largest
minimal prime in base 5
*3125 = 5
5
*3136 = 56
2, palindromic in base 3 (11022011
3),
tribonacci number
*3137 –
Proth prime,
both a left- and right-
truncatable prime
In number theory, a left-truncatable prime is a prime number which, in a given base, contains no 0, and if the leading ("left") digit is successively removed, then all resulting numbers are prime. For example, 9137, since 9137, 137, 37 and 7 are ...
*3149 –
highly cototient number In number theory, a branch of mathematics, a highly cototient number is a positive integer k which is above 1 and has more solutions to the equation
:x - \phi(x) = k
than any other integer below k and above 1. Here, \phi is Euler's totient fun ...
*3155 – member of the
Mian–Chowla sequence
*3160 –
triangular number
*3167 – safe prime
*3169 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
,
Cuban prime of the form ''x'' = ''y'' + 1
*3192 –
pronic number
3200 to 3299
*3203 – safe prime
*3207 – number of compositions of 14 whose run-lengths are either weakly increasing or weakly decreasing
*3229 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3240 –
triangular number
*3248 – member of a
Ruth-Aaron pair with 3249 under second definition, largest number whose
factorial
In mathematics, the factorial of a non-negative denoted is the product of all positive integers less than or equal The factorial also equals the product of n with the next smaller factorial:
\begin
n! &= n \times (n-1) \times (n-2) \t ...
is less than 10
10000 – hence its factorial is the largest certain advanced computer programs can handle.
*3249 = 57
2, palindromic in base 7 (12321
7), centered octagonal number,
member of a Ruth–Aaron pair with 3248 under second definition
*3253 – sum of eleven consecutive primes (269 + 271 + 277 + 281 + 283 + 293 + 307 + 311 + 313 + 317 + 331)
*3256 – centered heptagonal number
*3259 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
, completes the ninth
prime quadruplet set
*3264 – solution to
Steiner's conic problem: number of smooth conics tangent to 5 given conics in general position
*3266 – sum of first 41 primes, 523rd
sphenic number
*3276 –
tetrahedral number
*3277 – 5th
super-Poulet number, decagonal number
*3281 –
octahedral number,
centered square number
*3286 – nonagonal number
*3299 – 85th
Sophie Germain prime, super-prime
3300 to 3399
*3301 – a normal
prime number
*3306 –
pronic number
*3307 –
balanced prime In number theory, a balanced prime is a prime number with equal-sized prime gaps above and below it, so that it is equal to the arithmetic mean of the nearest primes above and below. Or to put it algebraically, given a prime number p_n, where is it ...
*3313 – balanced prime,
star number
*3319 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
,
happy number
*3321 –
triangular number
*3329 – 86th
Sophie Germain prime, Proth prime,
member of the
Padovan sequence
*3354 – member of the Mian–Chowla sequence
*3358 – sum of the squares of the first eleven primes
*3359 – 87th
Sophie Germain prime,
highly cototient number In number theory, a branch of mathematics, a highly cototient number is a positive integer k which is above 1 and has more solutions to the equation
:x - \phi(x) = k
than any other integer below k and above 1. Here, \phi is Euler's totient fun ...
*3363/2378 ≈
√2
*3364 = 58
2
*3367 = 15
3 - 2
3 = 16
3 - 9
3 = 34
3 - 33
3
*3375 = 15
3, palindromic in base 14 (1331
14), 15th
cube
In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. Viewed from a corner it is a hexagon and its net is usually depicted as a cross.
The cube is the only r ...
*3389 – 88th
Sophie Germain prime
3400 to 3499
*3403 –
triangular number
*3407 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3413 – 89th
Sophie Germain prime, sum of the first 5 n
n: 3413 = 1
1 + 2
2 + 3
3 + 4
4 + 5
5
*3422 –
pronic number, 553rd
sphenic number,
melting point of
tungsten in
degrees Celsius
*3435 – a
perfect digit-to-digit invariant In number theory, a perfect digit-to-digit invariant (PDDI; also known as a Munchausen number) is a natural number in a given number base b that is equal to the sum of its digits each raised to the power of itself. An example in base 10 is 3435, bec ...
, equal to the sum of its digits to their own powers (3
3 + 4
4 + 3
3 + 5
5 = 3435)
*3439 –
magic constant
The magic constant or magic sum of a magic square is the sum of numbers in any row, column, or diagonal of the magic square. For example, the magic square shown below has a magic constant of 15. For a normal magic square of order ''n'' – that is ...
of ''n''×''n'' normal
magic square
In recreational mathematics, a square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same. The 'order' of the magic square is the number ...
and
''n''-queens problem for ''n'' = 19.
*3445 –
centered square number
*3447 – sum of first 42 primes
*3449 – 90th
Sophie Germain prime
*3456 –
3-smooth
In number theory, an ''n''-smooth (or ''n''-friable) number is an integer whose prime factors are all less than or equal to ''n''. For example, a 7-smooth number is a number whose every prime factor is at most 7, so 49 = 72 and 15750 = 2 × 32 × 5 ...
number (2
7×3
3)
*3457 – Proth prime
*3463 –
happy number
*3467 – safe prime
*3469 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
,
Cuban prime of the form ''x'' = ''y'' + 2, completes the tenth
prime quadruplet set
*3473 – centered heptagonal number
*3481 = 59
2, centered octagonal number
*3486 – triangular number
*3491 – 91st
Sophie Germain prime
3500 to 3599
*3504 – nonagonal number
*3510 – decagonal number
*
3511 – largest known
Wieferich prime
*3512 – number of primes
.
*3517 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
, sum of nine consecutive primes (367 + 373 + 379 + 383 + 389 + 397 + 401 + 409 + 419)
*3539 – 92nd
Sophie Germain prime
*3540 –
pronic number
*3559 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3569 –
highly cototient number In number theory, a branch of mathematics, a highly cototient number is a positive integer k which is above 1 and has more solutions to the equation
:x - \phi(x) = k
than any other integer below k and above 1. Here, \phi is Euler's totient fun ...
*3570 –
triangular number
*3571 – 500th prime,
Cuban prime of the form ''x'' = ''y'' + 1,
17th
Lucas number, 4th
balanced prime In number theory, a balanced prime is a prime number with equal-sized prime gaps above and below it, so that it is equal to the arithmetic mean of the nearest primes above and below. Or to put it algebraically, given a prime number p_n, where is it ...
of order 4.
*3591 – member of the Mian–Chowla sequence
*3593 – 93rd
Sophie Germain prime, super-prime
3600 to 3699
*3600 = 60
2, number of seconds in an hour, called ''šār'' or ''šāru'' in the
sexagesimal system of
Ancient Mesopotamia (''cf''.
Saros), 1201-
gonal number
*3601 –
star number
*3610 – 19th
pentagonal pyramidal number
*3613 –
centered square number
*3617 – sum of eleven consecutive primes (293 + 307 + 311 + 313 + 317 + 331 + 337 + 347 + 349 + 353 + 359)
*3623 – 94th
Sophie Germain prime, safe prime
*3637 – balanced prime,
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3638 – sum of first 43 primes, 599th
sphenic number
*3643 –
happy number, sum of seven consecutive primes (499 + 503 + 509 + 521 + 523 + 541 + 547)
*3654 –
tetrahedral number
*3655 –
triangular number, 601st
sphenic number
*3660 –
pronic number
*3684 – 13th
Keith number
*3697 – centered heptagonal number
3700 to 3799
*3721 = 61
2, centered octagonal number
*3729 – nonagonal number
*3733 – balanced prime,
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3741 –
triangular number, 618th
sphenic number
*3751 – decagonal number
*3761 – 95th
Sophie Germain prime, super-prime
*3779 – 96th
Sophie Germain prime, safe prime
*3782 –
pronic number, 623rd
sphenic number
*3785 –
centered square number
*3797 – member of the Mian–Chowla sequence,
both a left- and right-
truncatable prime
In number theory, a left-truncatable prime is a prime number which, in a given base, contains no 0, and if the leading ("left") digit is successively removed, then all resulting numbers are prime. For example, 9137, since 9137, 137, 37 and 7 are ...
3800 to 3899
*3803 – 97th
Sophie Germain prime, safe prime, the largest prime factor of 123,456,789
*3821 – 98th
Sophie Germain prime
*3828 –
triangular number
*3831 – sum of first 44 primes
*3844 = 62
2
*3851 – 99th
Sophie Germain prime
*3863 – 100th
Sophie Germain prime
*3865 – greater of third pair of
Smith brothers
*3888 – longest number when expressed in
Roman numerals I, V, X, L, C, D, and M (MMMDCCCLXXXVIII),
3-smooth
In number theory, an ''n''-smooth (or ''n''-friable) number is an integer whose prime factors are all less than or equal to ''n''. For example, a 7-smooth number is a number whose every prime factor is at most 7, so 49 = 72 and 15750 = 2 × 32 × 5 ...
number (2
4×3
5)
*3889 –
Cuban prime of the form ''x'' = ''y'' + 2
*3894 –
octahedral number
3900 to 3999
*3901 –
star number
*3906 –
pronic number
*3911 – 101st
Sophie Germain prime,
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3916 –
triangular number
*3925 – centered cube number
*3926 – 12th
open meandric number, 654th
sphenic number
*3928 – centered heptagonal number
*3937 – product of distinct Mersenne primes, repeated sum of divisors is prime, denominator of conversion factor from meter to
US survey foot
*3940 – there are 3940 distinct ways to arrange the 12 flat
pentacubes (or 3-D
pentominoes) into a 3x4x5 box (not counting rotations and reflections)
*3943 –
super-prime
Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.
The subsequence begins
:3, 5, 11, 17, 31, ...
*3947 – safe prime
*3961 – nonagonal number,
centered square number
*3969 = 63
2, centered octagonal number
*3989 –
highly cototient number In number theory, a branch of mathematics, a highly cototient number is a positive integer k which is above 1 and has more solutions to the equation
:x - \phi(x) = k
than any other integer below k and above 1. Here, \phi is Euler's totient fun ...
*3998 – member of the Mian–Chowla sequence
*3999 – largest number properly expressible using
Roman numerals I, V, X, L, C, D, and M (MMMCMXCIX), ignoring
vinculum
Prime numbers
There are 120
prime numbers between 3000 and 4000:
:3001, 3011, 3019, 3023, 3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137, 3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271, 3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391, 3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, 3517, 3527, 3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607, 3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709, 3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797, 3803, 3821, 3823, 3833, 3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917, 3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989
References
{{Integers, 10
Integers