# 1i20

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

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

## Nearby Numbers

Positive, nonzero integers within three units

35
1f20
Thirty-Five in Base 20 Vigesimal
36
1g20
Thirty-Six in Base 20 Vigesimal
37
1h20
Thirty-Seven in Base 20 Vigesimal
39
1j20
Thirty-Nine in Base 20 Vigesimal
40
2020
Forty in Base 20 Vigesimal
41
2120
Forty-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.

### `0.0aaaaaaaaaaaa620`

The reciprocal of 38 in Base 20 Vigesimal.

## Palindrome?

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

The number 1i20 is not a palindrome.

## Not A Prime Number

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

Thirty-eight is a composite number with 4 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

## A Composite

Composites have more than just these two factors.

Thirty-eight is a composite number with 4 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 thirty-eight has the following 2 prime factors:

2
220
Two in Base 20 Vigesimal
19
j20
Nineteen 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 thirty-eight in 35 different bases