The Number

138915

One Hundred and Thirty-Eight Thousand Nine Hundred and Fifteen

In Base 21 Unovigesimal Is

f00021

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

For more familiar numbers: See One Hundred and Thirty-Eight Thousand Nine Hundred and Fifteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

138912
ekki21
One Hundred and Thirty-Eight Thousand Nine Hundred and Twelve in Base 21 Unovigesimal
138913
ekkj21
One Hundred and Thirty-Eight Thousand Nine Hundred and Thirteen in Base 21 Unovigesimal
138914
ekkk21
One Hundred and Thirty-Eight Thousand Nine Hundred and Fourteen in Base 21 Unovigesimal
138916
f00121
One Hundred and Thirty-Eight Thousand Nine Hundred and Sixteen in Base 21 Unovigesimal
138917
f00221
One Hundred and Thirty-Eight Thousand Nine Hundred and Seventeen in Base 21 Unovigesimal
138918
f00321
One Hundred and Thirty-Eight Thousand Nine 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.

1.38915e5

Reciprocal

A number multiplied with its reciprocal is one.

0.000188888888888821

The reciprocal of 138915 in Base 21 Unovigesimal.

Palindrome?

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

The number f00021 is not a palindrome.

Not A Prime Number

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

One hundred and thirty-eight thousand nine hundred and fifteen is a composite number with 40 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One hundred and thirty-eight thousand nine hundred and fifteen is a composite number with 40 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 one hundred and thirty-eight thousand nine hundred and fifteen has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal

Prime Factorization

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

3214 · 5211 · 7213 = f00021

Base Conversions

The number one hundred and thirty-eight thousand nine hundred and fifteen in 35 different bases