2

CardinaltwoOrdinal2nd (second)Numeral systembinaryFactorizationprimeGaussian integer factorization${\displaystyle (1+i)(1-i)}$Prime1stDivisors1, 2Greek numeralΒ´Roman numeralII, iiGreekprefixLatinprefix/Old EnglishprefixBinary10₂Ternary2₃Senary2₆Octal2₈Duodecimal2₁₂Hexadecimal2₁₆Arabic, Kurdish, Persian, Sindhi, Urdu٢Ge'ez፪Bengali২Chinese numeral二，弍，貳Devanāgarī२Santali᱒Tamil௨Kannada೨HebrewבArmenianԲKhmer២Maya numerals••Thai๒Georgian Ⴁ/ⴁ/ბ(Bani)Malayalam൨Babylonian numeral𒐖Egyptian hieroglyph, Aegean numeral, Chinese counting rod||Morse code.._ _ _

2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number.

Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.