# 4020

The numbers with a 20 subscript use Base 20 Vigesimal notation.

For more familiar numbers: See Eighty in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

77
3h20
Seventy-Seven in Base 20 Vigesimal
78
3i20
Seventy-Eight in Base 20 Vigesimal
79
3j20
Seventy-Nine in Base 20 Vigesimal
81
4120
Eighty-One in Base 20 Vigesimal
82
4220
Eighty-Two in Base 20 Vigesimal
83
4320
Eighty-Three in Base 20 Vigesimal

## 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.

### `0.0520`

The reciprocal of 80 in Base 20 Vigesimal.

## Palindrome?

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

The number 4020 is not a palindrome.

## Not A Prime Number

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

Eighty is a composite number with 10 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

## A Composite

Composites have more than just these two factors.

Eighty is a composite number with 10 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 eighty has the following 2 prime factors:

2
220
Two in Base 20 Vigesimal
5
520
Five in Base 20 Vigesimal

## Prime Factorization

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

## Base Conversions

The number eighty in 35 different bases