2

Also known as two, number 2, number two, the number 2, 2 (number)

2番目の正の整数

AI overview

2 is the smallest prime number and the only even prime number. It serves as a fundamental building block in mathematics, since every other even number can be divided by 2, and it appears throughout arithmetic, number theory, and countless practical applications.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Instance of: Motzkin number
Followed by: 3
Follows: 1
Image: Maya 2.svg

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Unicode character: ⒉
Commons category: 2 (number)
topic's main category: Category:2 (number)
numeric value: 2
Commons gallery: 2 (number)
used by: power of two
prime factor: 2
opposite of: ½
number of decimal digits: 1
code: ൨
mathematical inverse: −2
name in hiero markup: Z1*Z1
maintained by WikiProject: WikiProject Mathematics

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Article · 日本語

2（二、弐、貳、貮、に、じ、ふた、ふたつ）は、自然数または整数において、1 の次で 3 の前の数であり、素数である。英語では、基数詞でtwo、序数詞では2nd、second となる。ラテン語では duo（ドゥオ）。

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