### The Number

# 128

## One Hundred and Twenty-Eight

## In Base 4 Quaternary Is

# 20004

The numbers with a 4 subscript use Base 4 Quaternary notation.

For more familiar numbers: See One Hundred and Twenty-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.*

`1.28e2`

## Reciprocal

*A number multiplied with its reciprocal is one.*

`0.00024`

The reciprocal of 128 in Base 4 Quaternary.

## Palindrome?

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

The number 20004 is not a palindrome.

## Not A Prime Number

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

One hundred and twenty-eight is a composite number with 8 total factors (including 1 and itself). See primes in Base 4 Quaternary

## A Composite

*Composites have more than just these two factors.*

One hundred and twenty-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 one hundred and twenty-eight 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*

###
```
247
= 20004
```

## Base Conversions

*The number one hundred and twenty-eight in 35 different bases*