# 219

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

For more familiar numbers: See Nineteen in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

16
179
Sixteen in Base 9 Nonary
17
189
Seventeen in Base 9 Nonary
18
209
Eightteen in Base 9 Nonary
20
229
Twenty in Base 9 Nonary
21
239
Twenty-One in Base 9 Nonary
22
249
Twenty-Two 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.

### `0.0423275180423275179`

The reciprocal of 19 in Base 9 Nonary.

## Palindrome?

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

The number 219 is not a palindrome.

## A Prime Number

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

Nineteen is the 8th prime number.   See primes in Base 9 Nonary

## Not A Composite

Composites have more than just these two factors.

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

## Prime Factors

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

The number nineteen has the following 1 prime factor:

19
219
Nineteen 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 nineteen in 35 different bases