### The Number

# 23

## Twenty-Three

## Nearby Numbers

*Positive, nonzero integers within three units*

## 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

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

The number twenty-three has the following 1 prime factor:

## 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*