The Number

1800

One Thousand Eight Hundred

In Base 31 Untrigesimal Is

1r231

The numbers with a 31 subscript use Base 31 Untrigesimal notation.

For more familiar numbers: See One Thousand Eight Hundred in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

1797
1qu31
One Thousand Seven Hundred and Ninety-Seven in Base 31 Untrigesimal
1798
1r031
One Thousand Seven Hundred and Ninety-Eight in Base 31 Untrigesimal
1799
1r131
One Thousand Seven Hundred and Ninety-Nine in Base 31 Untrigesimal
1801
1r331
One Thousand Eight Hundred and One in Base 31 Untrigesimal
1802
1r431
One Thousand Eight Hundred and Two in Base 31 Untrigesimal
1803
1r531
One Thousand Eight Hundred and Three in Base 31 Untrigesimal

Scientific Notation

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

1.800e3

Reciprocal

A number multiplied with its reciprocal is one.

0.00gh22ij44kl531

The reciprocal of 1800 in Base 31 Untrigesimal.

Palindrome?

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

The number 1r231 is not a palindrome.

Not A Prime Number

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

One thousand eight hundred is a composite number with 36 total factors (including 1 and itself).   See primes in Base 31 Untrigesimal

A Composite

Composites have more than just these two factors.

One thousand eight hundred is a composite number with 36 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 one thousand eight hundred has the following 3 prime factors:

2
231
Two in Base 31 Untrigesimal
3
331
Three in Base 31 Untrigesimal
5
531
Five in Base 31 Untrigesimal

Prime Factorization

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

2313 · 3312 · 5312 = 1r231

Base Conversions

The number one thousand eight hundred in 35 different bases