What is 2 (number)?
{{otherusesof|2|2 (disambiguation)}} {{redirect|II}} [[File:En-us-Two.ogg|thumb|right|Pronunciation of the number 2]] {{Infobox number | number = | ordinal = | numeral = | factorization = | gaussian integer factorization = | prime = | divisor = 1, 2 | roman unicode = Ⅱ, ⅱ | greek prefix = [[Wiktionary:di-|di-]] | latin prefix = [[Wiktionary:duo-|duo-]] [[Wiktionary:bi-|bi-]] | old english prefix = [[Wiktionary:twi-|twi-]] | lang1 = [[Greek numeral]] | lang1 symbol = β' | lang2 = [[Eastern Arabic numerals|Arabic]] | lang2 symbol = {{resize|150%|٢}} | lang3 = [[Urdu]] | lang3 symbol = {{Urdu|2|11|top}} | lang4 = [[Ge'ez alphabet|Ge'ez]] | lang4 symbol = ፪ | lang5 = [[Bengali numerals|Bengali]] | lang5 symbol = {{resize|150%|২}} | lang6 = [[Chinese numeral]] | lang6 symbol = 二，弍，贰，貳 | lang7 = [[Devanāgarī]] | lang7 symbol = {{resize|150%|२}} | lang8 = [[Indian numerals#Telugu numerals and their names|Telugu]] | lang8 symbol = {{resize|150%|౨}} | lang9 = [[Tamil numerals|Tamil]] | lang9 symbol = {{resize|150%|௨}} | lang10 = [[Hebrew numerals|Hebrew]] | lang10 symbol = {{resize|150%|ב}} (Bet) | lang11 = [[Khmer numerals|Khmer]] | lang11 symbol = ២ | lang12 = [[Korean numerals|Korean]] | lang12 symbol = 이，둘 | lang13 = [[Thai numerals|Thai]] | lang13 symbol = ๒ }} '''2''' ('''Two'''; {{IPAc-en|audio=En-us-two.ogg|ˈ|t|uː}}) is a [[number]], [[numeral]], and [[glyph]]. It is the number after 1 ([[one]]) and the number before 3 ([[three]]). In [[Roman numerals]], it is '''II'''. == In mathematics == Two has many meanings in [[math]]. For example: <math> 1 + 1 = 2</math>.<ref>Wells, D. ''The Penguin Dictionary of Curious and Interesting Numbers'' London: Penguin Group. (1987): 41–44</ref> An [[integer]] is ''[[even]]'' if half of it equals an integer. If the last digit of a number is even, then the number is even. This means that if you multiply 2 times any whole number, it will end in 0, 2, 4, 6, or 8. Two is the smallest, first, and only even [[prime number]]. The next prime number is [[3 (number)|thr