Nearby Numbers

Positive, nonzero integers within three units

20

Twenty

21

Twenty-One

22

Twenty-Two

24

Twenty-Four

25

Twenty-Five

26

Twenty-Six

Scientific Notation

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

2.3e1

Reciprocal

A number multiplied with its reciprocal is one.

0.043478260869565216

The reciprocal of 23.

Palindrome?

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

The number 23 is not a palindrome.

A Prime Number

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

Twenty-three is the 9th prime number.   See primes in Base 10 Decimal

Not A Composite

Composites have more than just these two factors.

Twenty-Three is not a composite number because it has exactly two factors: One and Twenty-Three

Prime Factors

23

Twenty-Three

Prime Factorization

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

231 = 23

Base Conversions

The number twenty-three in 35 different bases