The Number

81100

Eighty-One Thousand One Hundred

In Base 21 Unovigesimal Is

8fij21

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

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

Nearby Numbers

Positive, nonzero integers within three units

81097
8fig21
Eighty-One Thousand and Ninety-Seven in Base 21 Unovigesimal
81098
8fih21
Eighty-One Thousand and Ninety-Eight in Base 21 Unovigesimal
81099
8fii21
Eighty-One Thousand and Ninety-Nine in Base 21 Unovigesimal
81101
8fik21
Eighty-One Thousand One Hundred and One in Base 21 Unovigesimal
81102
8fj021
Eighty-One Thousand One Hundred and Two in Base 21 Unovigesimal
81103
8fj121
Eighty-One Thousand One Hundred and Three in Base 21 Unovigesimal

Scientific Notation

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

8.1100e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000287b5275ed75e21

The reciprocal of 81100 in Base 21 Unovigesimal.

Palindrome?

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

The number 8fij21 is not a palindrome.

Not A Prime Number

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

Eighty-one thousand one hundred is a composite number with 18 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand one hundred is a composite number with 18 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 eighty-one thousand one hundred has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
811
1hd21
Eight Hundred and Eleven in Base 21 Unovigesimal

Prime Factorization

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

2212 · 5212 · 1hd211 = 8fij21

Base Conversions

The number eighty-one thousand one hundred in 35 different bases