The Number

81309

Eighty-One Thousand Three Hundred and Nine

In Base 11 Undecimal Is

560a811

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81306
560a511
Eighty-One Thousand Three Hundred and Six in Base 11 Undecimal
81307
560a611
Eighty-One Thousand Three Hundred and Seven in Base 11 Undecimal
81308
560a711
Eighty-One Thousand Three Hundred and Eight in Base 11 Undecimal
81310
560a911
Eighty-One Thousand Three Hundred and Ten in Base 11 Undecimal
81311
560aa11
Eighty-One Thousand Three Hundred and Eleven in Base 11 Undecimal
81312
5610011
Eighty-One Thousand Three Hundred and Twelve in Base 11 Undecimal

Scientific Notation

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

8.1309e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00001a873922155474511

The reciprocal of 81309 in Base 11 Undecimal.

Palindrome?

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

The number 560a811 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 nine is a composite number with 4 total factors (including 1 and itself).   See primes in Base 11 Undecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand three hundred and nine is a composite number with 4 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 nine has the following 2 prime factors:

3
311
Three in Base 11 Undecimal
27103
193aa11
Twenty-Seven Thousand One Hundred and Three in Base 11 Undecimal

Prime Factorization

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

3111 · 193aa111 = 560a811

Base Conversions

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