The Number

81042

Eighty-One Thousand and Forty-Two

In Base 13 Tridecimal Is

2ab7013

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

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

Nearby Numbers

Positive, nonzero integers within three units

81039
2ab6a13
Eighty-One Thousand and Thirty-Nine in Base 13 Tridecimal
81040
2ab6b13
Eighty-One Thousand and Forty in Base 13 Tridecimal
81041
2ab6c13
Eighty-One Thousand and Forty-One in Base 13 Tridecimal
81043
2ab7113
Eighty-One Thousand and Forty-Three in Base 13 Tridecimal
81044
2ab7213
Eighty-One Thousand and Forty-Four in Base 13 Tridecimal
81045
2ab7313
Eighty-One Thousand and Forty-Five in Base 13 Tridecimal

Scientific Notation

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

8.1042e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000047736b85ca13a1b13

The reciprocal of 81042 in Base 13 Tridecimal.

Palindrome?

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

The number 2ab7013 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 forty-two 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 forty-two 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 forty-two has the following 4 prime factors:

2
213
Two in Base 13 Tridecimal
3
313
Three in Base 13 Tridecimal
13
1013
Thirteen in Base 13 Tridecimal
1039
61c13
One Thousand and Thirty-Nine in Base 13 Tridecimal

Prime Factorization

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

2131 · 3131 · 10131 · 61c131 = 2ab7013

Base Conversions

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