The Number

9991

Nine Thousand Nine Hundred and Ninety-One

In Base 20 Vigesimal Is

14jb20

The numbers with a 20 subscript use Base 20 Vigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

9988
14j820
Nine Thousand Nine Hundred and Eighty-Eight in Base 20 Vigesimal
9989
14j920
Nine Thousand Nine Hundred and Eighty-Nine in Base 20 Vigesimal
9990
14ja20
Nine Thousand Nine Hundred and Ninety in Base 20 Vigesimal
9992
14jc20
Nine Thousand Nine Hundred and Ninety-Two in Base 20 Vigesimal
9993
14jd20
Nine Thousand Nine Hundred and Ninety-Three in Base 20 Vigesimal
9994
14je20
Nine Thousand Nine Hundred and Ninety-Four in Base 20 Vigesimal

Scientific Notation

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

9.991e3

Reciprocal

A number multiplied with its reciprocal is one.

0.000g05f61a3eh6j20

The reciprocal of 9991 in Base 20 Vigesimal.

Palindrome?

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

The number 14jb20 is not a palindrome.

Not A Prime Number

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

Nine thousand nine hundred and ninety-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

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

97
4h20
Ninety-Seven in Base 20 Vigesimal
103
5320
One Hundred and Three in Base 20 Vigesimal

Prime Factorization

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

4h201 · 53201 = 14jb20

Base Conversions

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