The Number

81015

Eighty-One Thousand and Fifteen

In Base 20 Vigesimal Is

a2af20

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

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

Nearby Numbers

Positive, nonzero integers within three units

81012
a2ac20
Eighty-One Thousand and Twelve in Base 20 Vigesimal
81013
a2ad20
Eighty-One Thousand and Thirteen in Base 20 Vigesimal
81014
a2ae20
Eighty-One Thousand and Fourteen in Base 20 Vigesimal
81016
a2ag20
Eighty-One Thousand and Sixteen in Base 20 Vigesimal
81017
a2ah20
Eighty-One Thousand and Seventeen in Base 20 Vigesimal
81018
a2ai20
Eighty-One Thousand and Eightteen in Base 20 Vigesimal

Scientific Notation

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

8.1015e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001j9jah6724i2220

The reciprocal of 81015 in Base 20 Vigesimal.

Palindrome?

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

The number a2af20 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 fifteen is a composite number with 16 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 and fifteen is a composite number with 16 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 fifteen has the following 4 prime factors:

3
320
Three in Base 20 Vigesimal
5
520
Five in Base 20 Vigesimal
11
b20
Eleven in Base 20 Vigesimal
491
14b20
Four Hundred and Ninety-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

3201 · 5201 · b201 · 14b201 = a2af20

Base Conversions

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