# 345

The numbers with a 5 subscript use Base 5 Quinary notation.

For more familiar numbers: See Nineteen in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

16
315
Sixteen in Base 5 Quinary
17
325
Seventeen in Base 5 Quinary
18
335
Eightteen in Base 5 Quinary
20
405
Twenty in Base 5 Quinary
21
415
Twenty-One in Base 5 Quinary
22
425
Twenty-Two in Base 5 Quinary

## 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.

### `0.0112421410112421410112425`

The reciprocal of 19 in Base 5 Quinary.

## Palindrome?

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

The number 345 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 5 Quinary

## 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
345
Nineteen in Base 5 Quinary

## 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