The Number

12985

Twelve Thousand Nine Hundred and Eighty-Five

In Base 21 Unovigesimal Is

189721

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

For more familiar numbers: See Twelve Thousand Nine Hundred and Eighty-Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12982
189421
Twelve Thousand Nine Hundred and Eighty-Two in Base 21 Unovigesimal
12983
189521
Twelve Thousand Nine Hundred and Eighty-Three in Base 21 Unovigesimal
12984
189621
Twelve Thousand Nine Hundred and Eighty-Four in Base 21 Unovigesimal
12986
189821
Twelve Thousand Nine Hundred and Eighty-Six in Base 21 Unovigesimal
12987
189921
Twelve Thousand Nine Hundred and Eighty-Seven in Base 21 Unovigesimal
12988
189a21
Twelve Thousand Nine Hundred and Eighty-Eight in Base 21 Unovigesimal

Scientific Notation

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

1.2985e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000ekb06dgbgk2e21

The reciprocal of 12985 in Base 21 Unovigesimal.

Palindrome?

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

The number 189721 is not a palindrome.

Not A Prime Number

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

Twelve thousand nine hundred and eighty-five is a composite number with 12 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Twelve thousand nine hundred and eighty-five is a composite number with 12 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 twelve thousand nine hundred and eighty-five has the following 3 prime factors:

5
521
Five in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal
53
2b21
Fifty-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

5211 · 7212 · 2b211 = 189721

Base Conversions

The number twelve thousand nine hundred and eighty-five in 35 different bases