The Number

21918

Twenty-One Thousand Nine Hundred and Eightteen

In Base 20 Vigesimal Is

2efi20

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

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

Nearby Numbers

Positive, nonzero integers within three units

21915
2eff20
Twenty-One Thousand Nine Hundred and Fifteen in Base 20 Vigesimal
21916
2efg20
Twenty-One Thousand Nine Hundred and Sixteen in Base 20 Vigesimal
21917
2efh20
Twenty-One Thousand Nine Hundred and Seventeen in Base 20 Vigesimal
21919
2efj20
Twenty-One Thousand Nine Hundred and Nineteen in Base 20 Vigesimal
21920
2eg020
Twenty-One Thousand Nine Hundred and Twenty in Base 20 Vigesimal
21921
2eg120
Twenty-One Thousand Nine Hundred and Twenty-One in Base 20 Vigesimal

Scientific Notation

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

2.1918e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00075jj9fc0e632i20

The reciprocal of 21918 in Base 20 Vigesimal.

Palindrome?

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

The number 2efi20 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand nine hundred and eightteen is a composite number with 16 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand nine hundred and eightteen 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 twenty-one thousand nine hundred and eightteen has the following 4 prime factors:

2
220
Two in Base 20 Vigesimal
3
320
Three in Base 20 Vigesimal
13
d20
Thirteen in Base 20 Vigesimal
281
e120
Two Hundred and Eighty-One in Base 20 Vigesimal

Prime Factorization

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

2201 · 3201 · d201 · e1201 = 2efi20

Base Conversions

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