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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.

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.

numbermatics.com

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

Number 1 - Curious Math Facts and Interesting Properties

Explore the curious properties of number 1, an odd number which is uniquely neither prime nor composite. Includes mathematical info, prime factorization, divisors, bases and much more!

merriam-webster.com

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

1 Definition & Meaning - Merriam-Webster

One John Doe made a speech. "Puma" and "cougar" are different names for one animal. The author and the main character are one and the same. : the first whole number above zero see Table of Numbers. : the number denoting unity. : a one-dollar bill. I'd like to read more but one doesn't have the time. … felt like belting him one. John Casey.

numeraly.com

https://numeraly.com/about-the-number-1/

About The Number 1 - numeraly.com

The number 1 is unique in many ways, and holds a fascinating position in the world of mathematics, science, and culture. As the first whole number, it is the foundation for all other numbers and serves as the starting point for counting.

britannica.com

https://www.britannica.com/science/the-number-one

The number one - Britannica

The number 1 symbolized unity and the origin of all things, since all other numbers can be created from 1 by adding enough copies of it. For example, 7 = 1 + 1 + 1 + 1 + 1 + 1 + 1.

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).

metanumbers.com

https://metanumbers.com/1

1 (Number)

In scientific notation, it is written as 1 × 10 0. It has a total of 0 prime factors and 1 positive divisors. There is one positive integer (up to 1) that is relatively prime to 1. The prime factorization of 1 is 1. Since it has a total of 0 prime factors, 1 is a composite number.

vedantu.com

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

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

Discover what the number 1 means with fun examples. Learn how to write 1 in words and boost your maths skills with Vedantu!