The Number

10815

Ten Thousand Eight Hundred and Fifteen

In Base 21 Unovigesimal Is

13b021

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Ten Thousand Eight Hundred and Fifteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

10812
13ai21
Ten Thousand Eight Hundred and Twelve in Base 21 Unovigesimal
10813
13aj21
Ten Thousand Eight Hundred and Thirteen in Base 21 Unovigesimal
10814
13ak21
Ten Thousand Eight Hundred and Fourteen in Base 21 Unovigesimal
10816
13b121
Ten Thousand Eight Hundred and Sixteen in Base 21 Unovigesimal
10817
13b221
Ten Thousand Eight Hundred and Seventeen in Base 21 Unovigesimal
10818
13b321
Ten Thousand Eight Hundred and Eightteen in Base 21 Unovigesimal

Scientific Notation

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

1.0815e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000hkd6367c5ffb21

The reciprocal of 10815 in Base 21 Unovigesimal.

Palindrome?

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

The number 13b021 is not a palindrome.

Not A Prime Number

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

Ten thousand eight hundred and fifteen is a composite number with 16 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Ten thousand eight hundred and fifteen is a composite number with 16 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 ten thousand eight hundred and fifteen has the following 4 prime factors:

3
321
Three in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal
103
4j21
One Hundred and Three in Base 21 Unovigesimal

Prime Factorization

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

3211 · 5211 · 7211 · 4j211 = 13b021

Base Conversions

The number ten thousand eight hundred and fifteen in 35 different bases