# i20

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

For more familiar numbers: See Eightteen in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

15
f20
Fifteen in Base 20 Vigesimal
16
g20
Sixteen in Base 20 Vigesimal
17
h20
Seventeen in Base 20 Vigesimal
19
j20
Nineteen in Base 20 Vigesimal
20
1020
Twenty in Base 20 Vigesimal
21
1120
Twenty-One 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.

### `0.1248hfb248hfb620`

The reciprocal of 18 in Base 20 Vigesimal.

## Palindrome?

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

The number i20 is a palindrome.

## Not A Prime Number

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

Eightteen is a composite number with 6 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

## A Composite

Composites have more than just these two factors.

Eightteen is a composite number with 6 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 eightteen has the following 2 prime factors:

2
220
Two in Base 20 Vigesimal
3
320
Three 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 eightteen in 35 different bases