The Number

81011

Eighty-One Thousand and Eleven

In Base 21 Unovigesimal Is

8fee21

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

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

Nearby Numbers

Positive, nonzero integers within three units

81008
8feb21
Eighty-One Thousand and Eight in Base 21 Unovigesimal
81009
8fec21
Eighty-One Thousand and Nine in Base 21 Unovigesimal
81010
8fed21
Eighty-One Thousand and Ten in Base 21 Unovigesimal
81012
8fef21
Eighty-One Thousand and Twelve in Base 21 Unovigesimal
81013
8feg21
Eighty-One Thousand and Thirteen in Base 21 Unovigesimal
81014
8feh21
Eighty-One Thousand and Fourteen in Base 21 Unovigesimal

Scientific Notation

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

8.1011e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000288eda05d921721

The reciprocal of 81011 in Base 21 Unovigesimal.

Palindrome?

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

The number 8fee21 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 and eleven is a composite number with 8 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 and eleven is a composite number with 8 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 and eleven has the following 3 prime factors:

7
721
Seven in Base 21 Unovigesimal
71
3821
Seventy-One in Base 21 Unovigesimal
163
7g21
One Hundred and Sixty-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

7211 · 38211 · 7g211 = 8fee21

Base Conversions

The number eighty-one thousand and eleven in 35 different bases