# d31

The numbers with a 31 subscript use Base 31 Untrigesimal notation.

For more familiar numbers: See Thirteen in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

10
a31
Ten in Base 31 Untrigesimal
11
b31
Eleven in Base 31 Untrigesimal
12
c31
Twelve in Base 31 Untrigesimal
14
e31
Fourteen in Base 31 Untrigesimal
15
f31
Fifteen in Base 31 Untrigesimal
16
g31
Sixteen in Base 31 Untrigesimal

## Scientific Notation

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

## Reciprocal

A number multiplied with its reciprocal is one.

### `0.2bsj2bsj2bsi31`

The reciprocal of 13 in Base 31 Untrigesimal.

## Palindrome?

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

The number d31 is a palindrome.

## A Prime Number

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

Thirteen is the 6th prime number.   See primes in Base 31 Untrigesimal

## Not A Composite

Composites have more than just these two factors.

Thirteen is not a composite number because it has exactly two factors: One and Thirteen

## Prime Factors

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

The number thirteen has the following 1 prime factor:

13
d31
Thirteen in Base 31 Untrigesimal

## Prime Factorization

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

## Base Conversions

The number thirteen in 35 different bases