The Number

21900

Twenty-One Thousand Nine Hundred

In Base 25 Pentavigesimal Is

1a1025

The numbers with a 25 subscript use Base 25 Pentavigesimal notation.

For more familiar numbers: See Twenty-One Thousand Nine Hundred in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21897
1a0m25
Twenty-One Thousand Eight Hundred and Ninety-Seven in Base 25 Pentavigesimal
21898
1a0n25
Twenty-One Thousand Eight Hundred and Ninety-Eight in Base 25 Pentavigesimal
21899
1a0o25
Twenty-One Thousand Eight Hundred and Ninety-Nine in Base 25 Pentavigesimal
21901
1a1125
Twenty-One Thousand Nine Hundred and One in Base 25 Pentavigesimal
21902
1a1225
Twenty-One Thousand Nine Hundred and Two in Base 25 Pentavigesimal
21903
1a1325
Twenty-One Thousand Nine Hundred and Three in Base 25 Pentavigesimal

Scientific Notation

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

2.1900e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000hkmo8eilf2ad25

The reciprocal of 21900 in Base 25 Pentavigesimal.

Palindrome?

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

The number 1a1025 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand nine hundred is a composite number with 36 total factors (including 1 and itself).   See primes in Base 25 Pentavigesimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand nine hundred is a composite number with 36 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 twenty-one thousand nine hundred has the following 4 prime factors:

2
225
Two in Base 25 Pentavigesimal
3
325
Three in Base 25 Pentavigesimal
5
525
Five in Base 25 Pentavigesimal
73
2n25
Seventy-Three in Base 25 Pentavigesimal

Prime Factorization

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

2252 · 3251 · 5252 · 2n251 = 1a1025

Base Conversions

The number twenty-one thousand nine hundred in 35 different bases