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.

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 …

Dec 10, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari २ (2)), from a cursive form of two lines to represent the number two. See 2 § Evolution for more.

2 (Two; / ˈtuː / (listen)) 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.

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Learn the different ways number 2 can be represented. See the number two on a number line, five frame, ten frame, numeral, word, dice, dominoes, tally mark, fingers and picture representations.

The superscript two, ², is used in mathematics to denote the square of a number or variable. It also represents the second derivative in calculus when used as a notation for differentiation.

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Explore the curious properties of number 2, the only even prime number. Includes mathematical info, prime factorization, divisors, bases and much more! A fascinating reference for students, coders, …

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 …