# 2d18

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See Forty-Nine in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

46
2a18
Forty-Six in Base 18 Octodecimal
47
2b18
Forty-Seven in Base 18 Octodecimal
48
2c18
Forty-Eight in Base 18 Octodecimal
50
2e18
Fifty in Base 18 Octodecimal
51
2f18
Fifty-One in Base 18 Octodecimal
52
2g18
Fifty-Two in Base 18 Octodecimal

## 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.

### `0.06b06b06b06b0618`

The reciprocal of 49 in Base 18 Octodecimal.

## Palindrome?

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

The number 2d18 is not a palindrome.

## Not A Prime Number

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

Forty-nine is a composite number with 3 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

## A Composite

Composites have more than just these two factors.

Forty-nine is a composite number with 3 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 forty-nine has the following 1 prime factor:

7
718
Seven in Base 18 Octodecimal

## Prime Factorization

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

## Base Conversions

The number forty-nine in 35 different bases