# 229

The numbers with a 9 subscript use Base 9 Nonary notation.

For more familiar numbers: See Twenty in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

17
189
Seventeen in Base 9 Nonary
18
209
Eightteen in Base 9 Nonary
19
219
Nineteen in Base 9 Nonary
21
239
Twenty-One in Base 9 Nonary
22
249
Twenty-Two in Base 9 Nonary
23
259
Twenty-Three in Base 9 Nonary

## 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.

### `0.0404040404040404049`

The reciprocal of 20 in Base 9 Nonary.

## Palindrome?

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

The number 229 is a palindrome.

## Not A Prime Number

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

Twenty is a composite number with 6 total factors (including 1 and itself).   See primes in Base 9 Nonary

## A Composite

Composites have more than just these two factors.

Twenty 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 twenty has the following 2 prime factors:

2
29
Two in Base 9 Nonary
5
59
Five in Base 9 Nonary

## Prime Factorization

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

## Base Conversions

The number twenty in 35 different bases