### The Number

# 61

## Sixty-One

## In Base 2 Binary Is

# 1111012

The numbers with a 2 subscript use Base 2 Binary notation.

For more familiar numbers: See Sixty-One 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.*

`6.1e1`

## Reciprocal

*A number multiplied with its reciprocal is one.*

`0.00000100001100100101110001010011111011110011011010001110112`

The reciprocal of 61 in Base 2 Binary.

## Palindrome?

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

The number 1111012 is not a palindrome.

## A Prime Number

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

Sixty-one is the 18th prime number. See primes in Base 2 Binary

## Not A Composite

*Composites have more than just these two factors.*

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

## Prime Factors

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

The number sixty-one 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*

###
```
11110121
= 1111012
```

## Base Conversions

*The number sixty-one in 35 different bases*