The Number

81000

Eighty-One Thousand

In Base 20 Vigesimal Is

a2a020

The numbers with a 20 subscript use Base 20 Vigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

80997
a29h20
Eighty Thousand Nine Hundred and Ninety-Seven in Base 20 Vigesimal
80998
a29i20
Eighty Thousand Nine Hundred and Ninety-Eight in Base 20 Vigesimal
80999
a29j20
Eighty Thousand Nine Hundred and Ninety-Nine in Base 20 Vigesimal
81001
a2a120
Eighty-One Thousand and One in Base 20 Vigesimal
81002
a2a220
Eighty-One Thousand and Two in Base 20 Vigesimal
81003
a2a320
Eighty-One Thousand and Three in Base 20 Vigesimal

Scientific Notation

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

8.1000e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001ja297d1eb73420

The reciprocal of 81000 in Base 20 Vigesimal.

Palindrome?

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

The number a2a020 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 is a composite number with 80 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand is a composite number with 80 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 has the following 3 prime factors:

2
220
Two in Base 20 Vigesimal
3
320
Three in Base 20 Vigesimal
5
520
Five in Base 20 Vigesimal

Prime Factorization

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

2203 · 3204 · 5203 = a2a020

Base Conversions

The number eighty-one thousand in 35 different bases