The Number

81561

Eighty-One Thousand Five Hundred and Sixty-One

In Base 14 Quattuordecimal Is

21a1b14

The numbers with a 14 subscript use Base 14 Quattuordecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81558
21a1814
Eighty-One Thousand Five Hundred and Fifty-Eight in Base 14 Quattuordecimal
81559
21a1914
Eighty-One Thousand Five Hundred and Fifty-Nine in Base 14 Quattuordecimal
81560
21a1a14
Eighty-One Thousand Five Hundred and Sixty in Base 14 Quattuordecimal
81562
21a1c14
Eighty-One Thousand Five Hundred and Sixty-Two in Base 14 Quattuordecimal
81563
21a1d14
Eighty-One Thousand Five Hundred and Sixty-Three in Base 14 Quattuordecimal
81564
21a2014
Eighty-One Thousand Five Hundred and Sixty-Four in Base 14 Quattuordecimal

Scientific Notation

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

8.1561e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000068464263c69ad814

The reciprocal of 81561 in Base 14 Quattuordecimal.

Palindrome?

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

The number 21a1b14 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 five hundred and sixty-one is a composite number with 8 total factors (including 1 and itself).   See primes in Base 14 Quattuordecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand five hundred and sixty-one is a composite number with 8 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 five hundred and sixty-one has the following 3 prime factors:

3
314
Three in Base 14 Quattuordecimal
31
2314
Thirty-One in Base 14 Quattuordecimal
877
46914
Eight Hundred and Seventy-Seven in Base 14 Quattuordecimal

Prime Factorization

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

3141 · 23141 · 469141 = 21a1b14

Base Conversions

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