The Number

1

One

Nearby Numbers

Positive, nonzero integers within three units

2
Two
3
Three
4
Four

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1e0

Reciprocal

A number multiplied with its reciprocal is one.

1

The reciprocal of 1.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 1 is a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One is a composite number with 1 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

One is a composite number with 1 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one has the following 0 prime factor:

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

= 1

Base Conversions

The number one in 35 different bases