The Number

18993

Eightteen Thousand Nine Hundred and Ninety-Three

In Base 21 Unovigesimal Is

211921

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

18990
211621
Eightteen Thousand Nine Hundred and Ninety in Base 21 Unovigesimal
18991
211721
Eightteen Thousand Nine Hundred and Ninety-One in Base 21 Unovigesimal
18992
211821
Eightteen Thousand Nine Hundred and Ninety-Two in Base 21 Unovigesimal
18994
211a21
Eightteen Thousand Nine Hundred and Ninety-Four in Base 21 Unovigesimal
18995
211b21
Eightteen Thousand Nine Hundred and Ninety-Five in Base 21 Unovigesimal
18996
211c21
Eightteen Thousand Nine Hundred and Ninety-Six in Base 21 Unovigesimal

Scientific Notation

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

1.8993e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000a50e1a470ib221

The reciprocal of 18993 in Base 21 Unovigesimal.

Palindrome?

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

The number 211921 is not a palindrome.

Not A Prime Number

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

Eightteen thousand nine hundred and ninety-three is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Eightteen thousand nine hundred and ninety-three 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 eightteen thousand nine hundred and ninety-three has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
13
d21
Thirteen in Base 21 Unovigesimal
487
12421
Four Hundred and Eighty-Seven in Base 21 Unovigesimal

Prime Factorization

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

3211 · d211 · 124211 = 211921

Base Conversions

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