The Number

81015

Eighty-One Thousand and Fifteen

In Base 13 Tridecimal Is

2ab4c13

The numbers with a 13 subscript use Base 13 Tridecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81012
2ab4913
Eighty-One Thousand and Twelve in Base 13 Tridecimal
81013
2ab4a13
Eighty-One Thousand and Thirteen in Base 13 Tridecimal
81014
2ab4b13
Eighty-One Thousand and Fourteen in Base 13 Tridecimal
81016
2ab5013
Eighty-One Thousand and Sixteen in Base 13 Tridecimal
81017
2ab5113
Eighty-One Thousand and Seventeen in Base 13 Tridecimal
81018
2ab5213
Eighty-One Thousand and Eightteen in Base 13 Tridecimal

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.

0.00004776b6755a41a4913

The reciprocal of 81015 in Base 13 Tridecimal.

Palindrome?

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

The number 2ab4c13 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 13 Tridecimal

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
313
Three in Base 13 Tridecimal
5
513
Five in Base 13 Tridecimal
11
b13
Eleven in Base 13 Tridecimal
491
2ba13
Four Hundred and Ninety-One in Base 13 Tridecimal

Prime Factorization

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

3131 · 5131 · b131 · 2ba131 = 2ab4c13

Base Conversions

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