The Number

15

Fifteen

In Base 20 Vigesimal Is

f20

The numbers with a 20 subscript use Base 20 Vigesimal notation.

For more familiar numbers: See Fifteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12
c20
Twelve in Base 20 Vigesimal
13
d20
Thirteen in Base 20 Vigesimal
14
e20
Fourteen in Base 20 Vigesimal
16
g20
Sixteen in Base 20 Vigesimal
17
h20
Seventeen in Base 20 Vigesimal
18
i20
Eightteen in Base 20 Vigesimal

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.

0.16d6d6d6d6d6d20

The reciprocal of 15 in Base 20 Vigesimal.

Palindrome?

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

The number f20 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 20 Vigesimal

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
320
Three in Base 20 Vigesimal
5
520
Five in Base 20 Vigesimal

Prime Factorization

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

3201 · 5201 = f20

Base Conversions

The number fifteen in 35 different bases