The number two (2) is the second positive integer and the first prime number. It is even, and is the only even prime (the primes other than 2 are called the odd primes). The number 2 is also equal to its factorial since 2!=2. A quantity taken to the power 2 is said to be squared. Learn and practise recognising number 2! Help the Numberblocks discover number 2 in this fun BBC Bitesize Reception Maths guide. Discover the fascinating world of the number 2, its meanings, facts, religious significance, angel number interpretations, and its role in arts and literature. The number 2 is the second natural number, after 1. Each natural number, including 2, is constructed by succession, that is, by adding 1 to the previous natural number. Watch Numberblocks full episodes on BBC iPlayer: Subscribe for more Numberblocks: to c. The number two, represented as '2', is a fundamental concept in mathematics, signifying one more than one. It is the base for the binary number system, which uses only 0 and 1, crucial for computers. Culturally, the number 2 often symbolizes dualities such as male/female, yes/no, and yin/yang. It can also represent concepts like double or dual. In some contexts, like the Mayan number. The glyph currently used in the Western world to represent the number 2 traces its roots back to the Brahmin Indians, who wrote 2 as two horizontal lines. (It is still written that way in modern Chinese and Japanese.) 2 (Two; / ˈtuː / ( ⓘ)) is a number, numeral, and glyph. It is the number after 1 (one), followed by 3 (three), then 4 (four). In Roman numerals, it is II. Learn about the number 2. Learn the different ways number 2 can be represented. See the number two on a number line, five frame, ten frame, numeral, word, di. The number 2 is an even number because it is divisible by 2 without a remainder. Even numbers follow the pattern 2, 4, 6, 8. and can be written in the form 2 × n, where n is an integer.