The Number

81305

Eighty-One Thousand Three Hundred and Five

In Base 13 Tridecimal Is

2b01313

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

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

Nearby Numbers

Positive, nonzero integers within three units

81302
2b01013
Eighty-One Thousand Three Hundred and Two in Base 13 Tridecimal
81303
2b01113
Eighty-One Thousand Three Hundred and Three in Base 13 Tridecimal
81304
2b01213
Eighty-One Thousand Three Hundred and Four in Base 13 Tridecimal
81306
2b01413
Eighty-One Thousand Three Hundred and Six in Base 13 Tridecimal
81307
2b01513
Eighty-One Thousand Three Hundred and Seven in Base 13 Tridecimal
81308
2b01613
Eighty-One Thousand Three Hundred and Eight in Base 13 Tridecimal

Scientific Notation

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

8.1305e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00004749c818796176813

The reciprocal of 81305 in Base 13 Tridecimal.

Palindrome?

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

The number 2b01313 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 three hundred and five 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 three hundred and five 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 three hundred and five has the following 4 prime factors:

5
513
Five in Base 13 Tridecimal
7
713
Seven in Base 13 Tridecimal
23
1a13
Twenty-Three in Base 13 Tridecimal
101
7a13
One Hundred and 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

5131 · 7131 · 1a131 · 7a131 = 2b01313

Base Conversions

The number eighty-one thousand three hundred and five in 35 different bases