The Number

15

Fifteen

In Base 2 Binary Is

11112

The numbers with a 2 subscript use Base 2 Binary notation.

For more familiar numbers: See Fifteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12
11002
Twelve in Base 2 Binary
13
11012
Thirteen in Base 2 Binary
14
11102
Fourteen in Base 2 Binary
16
100002
Sixteen in Base 2 Binary
17
100012
Seventeen in Base 2 Binary
18
100102
Eightteen in Base 2 Binary

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.5e1

Reciprocal

A number multiplied with its reciprocal is one.

0.000100010001000100010001000100010001000100010001000100012

The reciprocal of 15 in Base 2 Binary.

Palindrome?

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

The number 11112 is a palindrome.

Not A Prime Number

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

Fifteen is a composite number with 4 total factors (including 1 and itself).   See primes in Base 2 Binary

A Composite

Composites have more than just these two factors.

Fifteen 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 fifteen has the following 2 prime factors:

3
112
Three in Base 2 Binary
5
1012
Five in Base 2 Binary

Prime Factorization

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

1121 · 10121 = 11112

Base Conversions

The number fifteen in 35 different bases