The Number

20991

Twenty Thousand Nine Hundred and Ninety-One

In Base 27 Heptavigesimal Is

11lc27

The numbers with a 27 subscript use Base 27 Heptavigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

20988
11l927
Twenty Thousand Nine Hundred and Eighty-Eight in Base 27 Heptavigesimal
20989
11la27
Twenty Thousand Nine Hundred and Eighty-Nine in Base 27 Heptavigesimal
20990
11lb27
Twenty Thousand Nine Hundred and Ninety in Base 27 Heptavigesimal
20992
11ld27
Twenty Thousand Nine Hundred and Ninety-Two in Base 27 Heptavigesimal
20993
11le27
Twenty Thousand Nine Hundred and Ninety-Three in Base 27 Heptavigesimal
20994
11lf27
Twenty Thousand Nine Hundred and Ninety-Four in Base 27 Heptavigesimal

Scientific Notation

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

2.0991e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000p8fdgnopqj27

The reciprocal of 20991 in Base 27 Heptavigesimal.

Palindrome?

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

The number 11lc27 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Twenty thousand nine hundred and ninety-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 27 Heptavigesimal

A Composite

Composites have more than just these two factors.

Twenty thousand nine hundred and ninety-one 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 twenty thousand nine hundred and ninety-one has the following 2 prime factors:

3
327
Three in Base 27 Heptavigesimal
6997
9g427
Six Thousand Nine Hundred and Ninety-Seven in Base 27 Heptavigesimal

Prime Factorization

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

3271 · 9g4271 = 11lc27

Base Conversions

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