### The Number

# 78

## Seventy-Eight

## In Base 9 Nonary Is

# 869

The numbers with a 9 subscript use Base 9 Nonary notation.

For more familiar numbers: See Seventy-Eight in Base 10 Decimal

## 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.*

`7.8e1`

## Reciprocal

*A number multiplied with its reciprocal is one.*

`0.010310310310310319`

The reciprocal of 78 in Base 9 Nonary.

## Palindrome?

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

The number 869 is not a palindrome.

## Not A Prime Number

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

Seventy-eight is a composite number with 8 total factors (including 1 and itself). See primes in Base 9 Nonary

## A Composite

*Composites have more than just these two factors.*

Seventy-eight is a composite number with 8 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 seventy-eight has the following 3 prime factors:

## Prime Factorization

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

###
```
291
·
391
·
1491
= 869
```

## Base Conversions

*The number seventy-eight in 35 different bases*