The Number

201990

Two Hundred and One Thousand Nine Hundred and Ninety

In Base 18 Octodecimal Is

1gb7c18

The numbers with a 18 subscript use Base 18 Octodecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

201987
1gb7918
Two Hundred and One Thousand Nine Hundred and Eighty-Seven in Base 18 Octodecimal
201988
1gb7a18
Two Hundred and One Thousand Nine Hundred and Eighty-Eight in Base 18 Octodecimal
201989
1gb7b18
Two Hundred and One Thousand Nine Hundred and Eighty-Nine in Base 18 Octodecimal
201991
1gb7d18
Two Hundred and One Thousand Nine Hundred and Ninety-One in Base 18 Octodecimal
201992
1gb7e18
Two Hundred and One Thousand Nine Hundred and Ninety-Two in Base 18 Octodecimal
201993
1gb7f18
Two Hundred and One Thousand Nine Hundred and Ninety-Three in Base 18 Octodecimal

Scientific Notation

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

2.01990e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000966gh5743cf5718

The reciprocal of 201990 in Base 18 Octodecimal.

Palindrome?

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

The number 1gb7c18 is not a palindrome.

Not A Prime Number

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

Two hundred and one thousand nine hundred and ninety is a composite number with 16 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Two hundred and one thousand nine hundred and ninety 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 two hundred and one thousand nine hundred and ninety has the following 4 prime factors:

2
218
Two in Base 18 Octodecimal
3
318
Three in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal
6733
12e118
Six Thousand Seven Hundred and Thirty-Three in Base 18 Octodecimal

Prime Factorization

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

2181 · 3181 · 5181 · 12e1181 = 1gb7c18

Base Conversions

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