103 (one hundred
ndthree) is the
natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country").
Numbers used for counting are called ''Cardinal n ...
following
102 102 may refer to:
* 102 (number), the number
* AD 102, a year in the 2nd century AD
* 102 BC, a year in the 2nd century BC
* 102 (ambulance service), an emergency medical transport service in Uttar Pradesh, India
* 102 (Clyde) Field Squadron, Royal ...
and preceding
104.
In mathematics
103 is the 27th
prime number
A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
. The previous prime is
101, making them both
twin prime
A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin pr ...
s. It is also a
happy number
In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 1^2+3^2=10, and 1^2+0^2=1. On the other hand, 4 is not a happy number because ...
.
103 is a strictly non-palindromic number.
See also
*
103 (disambiguation)
References
{{Number-stub
Integers