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wikipedia.org

https://en.wikipedia.org/wiki/1

1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers.

wiktionary.org

https://en.wiktionary.org/wiki/1

1 - Wiktionary, the free dictionary

Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1, “éka”)), possibly influenced by Roman numeral Ⅰ, both ultimately from using a single stroke to represent the number one.

britannica.com

https://www.britannica.com/topic/Roman-numeral

Roman numerals | Chart, LIX, & Facts | Britannica

Roman numerals are a system of numerical notation based on the ancient Roman system. The symbols are I, V, X, L, C, D, and M, standing respectively for 1, 5, 10, 50, 100, 500, and 1,000 in the Hindu-Arabic numeral system.

newworldencyclopedia.org

https://www.newworldencyclopedia.org/entry/1_(numb…

1 (number) - New World Encyclopedia

The glyph used today in the Western world to represent the number 1, a vertical line, often with a serif at the top and sometimes a short horizontal line at the bottom, traces its roots back to the Indians, who wrote 1 as a horizontal line, as is still the case in Chinese script.

fandom.com

https://math.fandom.com/wiki/1_(number)

1 (number) | Math Wiki | Fandom

1 is the Hindu-Arabic numeral for the number one (the unit). It is the smallest positive integer, and smallest natural number. 1 is the multiplicative identity, i.e. any number multiplied by 1 equals itself, for example: a ⋅ 1 = a {\displaystyle a \cdot 1=a} and 1 × a = a {\displaystyle 1\times...

numbermatics.com

https://numbermatics.com/n/1/

Number 1 - Facts about the integer - Numbermatics

Your guide to the number 1, an odd number which is uniquely neither prime nor composite. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.

vedantu.com

https://www.vedantu.com/maths/what-is-1

What Is 1? Definition, Facts & Examples for Kids - Vedantu

One is a number in Mathematics that represents the quantity or the value of 1. While counting, the number 1 is succeeded by 2 which is then succeeded by 3 and so on. Before learning some interesting facts about the number 1, let us look into what a number is.

merriam-webster.com

https://www.merriam-webster.com/dictionary/1

1 Definition & Meaning - Merriam-Webster

one 1 of 3 adjective ˈwən ˌwən 1 : being a single unit or thing see number 2 : being a certain unit or thing

wolfram.com

https://mathworld.wolfram.com/1.html

1 -- from Wolfram MathWorld

Although the number 1 used to be considered a prime number, it requires special treatment in so many definitions and applications involving primes greater than or equal to 2 that it is usually placed into a class of its own (Wells 1986, p. 31).

definitions.net

https://www.definitions.net/definition/1

What does 1 mean? - Definitions.net

1 (one, also called unit, unity, and (multiplicative) identity) is a number, and a numerical digit used to represent that number in numerals. It represents a single entity, the unit of counting or measurement.