The Number

81009

Eighty-One Thousand and Nine

In Base 22 Duovigesimal Is

7d8522

The numbers with a 22 subscript use Base 22 Duovigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81006
7d8222
Eighty-One Thousand and Six in Base 22 Duovigesimal
81007
7d8322
Eighty-One Thousand and Seven in Base 22 Duovigesimal
81008
7d8422
Eighty-One Thousand and Eight in Base 22 Duovigesimal
81010
7d8622
Eighty-One Thousand and Ten in Base 22 Duovigesimal
81011
7d8722
Eighty-One Thousand and Eleven in Base 22 Duovigesimal
81012
7d8822
Eighty-One Thousand and Twelve in Base 22 Duovigesimal

Scientific Notation

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

8.1009e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0002jdd2e816931722

The reciprocal of 81009 in Base 22 Duovigesimal.

Palindrome?

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

The number 7d8522 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 nine is a composite number with 6 total factors (including 1 and itself).   See primes in Base 22 Duovigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand and nine is a composite number with 6 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 nine has the following 2 prime factors:

3
322
Three in Base 22 Duovigesimal
9001
id322
Nine Thousand and One in Base 22 Duovigesimal

Prime Factorization

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

3222 · id3221 = 7d8522

Base Conversions

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