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

1，是一个阿拉伯数字。 1是一个自然数，是最小的正整数，是最小的正奇数。 1是一个有理数，是一位数，也是奇数。 1既不是质数也不是合数。 1的n次方（n∈R）都等于1。 1的倒数是它本 …

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 …

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 …

Not surprisingly, the number 1 is generally treated as a symbol of unity. Therefore, in monotheistic religions, it often symbolizes God or the universe. The Pythagoreans did not consider 1 to be a …

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!

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 …

Dec 3, 2025 · 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 …

In numerology, the number 1 is often associated with individuality, leadership, and assertiveness, as it represents the potential for new beginnings and the ability to stand alone.

在数学中，1为乘法单位元，即任何数字与1相乘皆等于其本身。 按照惯例，1不被视为素数。 在数字电路中，1表示 二进制 中的“开启”状态，是计算技术的基础。 在 哲学 领域，1在诸多传统中 …