The Number

81001

Eighty-One Thousand and One

In Base 20 Vigesimal Is

a2a120

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

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

Nearby Numbers

Positive, nonzero integers within three units

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
81000
a2a020
Eighty-One Thousand 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
81004
a2a420
Eighty-One Thousand and Four in Base 20 Vigesimal

Scientific Notation

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

8.1001e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001ja259c773j5920

The reciprocal of 81001 in Base 20 Vigesimal.

Palindrome?

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

The number a2a120 is not a palindrome.

A Prime Number

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

Eighty-one thousand and one is the 7926th prime number.   See primes in Base 20 Vigesimal

Not A Composite

Composites have more than just these two factors.

Eighty-One Thousand and One is not a composite number because it has exactly two factors: One and Eighty-One Thousand and One

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 one has the following 1 prime factor:

81001
a2a120
Eighty-One Thousand and One in Base 20 Vigesimal

Prime Factorization

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

a2a1201 = a2a120

Base Conversions

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