The Number

81920

Eighty-One Thousand Nine Hundred and Twenty

In Base 13 Tridecimal Is

2b39713

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

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

Nearby Numbers

Positive, nonzero integers within three units

81917
2b39413
Eighty-One Thousand Nine Hundred and Seventeen in Base 13 Tridecimal
81918
2b39513
Eighty-One Thousand Nine Hundred and Eightteen in Base 13 Tridecimal
81919
2b39613
Eighty-One Thousand Nine Hundred and Nineteen in Base 13 Tridecimal
81921
2b39813
Eighty-One Thousand Nine Hundred and Twenty-One in Base 13 Tridecimal
81922
2b39913
Eighty-One Thousand Nine Hundred and Twenty-Two in Base 13 Tridecimal
81923
2b39a13
Eighty-One Thousand Nine Hundred and Twenty-Three in Base 13 Tridecimal

Scientific Notation

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

8.1920e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000046bc85bc203216313

The reciprocal of 81920 in Base 13 Tridecimal.

Palindrome?

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

The number 2b39713 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 nine hundred and twenty is a composite number with 30 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 nine hundred and twenty is a composite number with 30 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 nine hundred and twenty has the following 2 prime factors:

2
213
Two in Base 13 Tridecimal
5
513
Five in Base 13 Tridecimal

Prime Factorization

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

21314 · 5131 = 2b39713

Base Conversions

The number eighty-one thousand nine hundred and twenty in 35 different bases