The Number

81399

Eighty-One Thousand Three Hundred and Ninety-Nine

In Base 18 Octodecimal Is

dh4318

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

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

Nearby Numbers

Positive, nonzero integers within three units

81396
dh4018
Eighty-One Thousand Three Hundred and Ninety-Six in Base 18 Octodecimal
81397
dh4118
Eighty-One Thousand Three Hundred and Ninety-Seven in Base 18 Octodecimal
81398
dh4218
Eighty-One Thousand Three Hundred and Ninety-Eight in Base 18 Octodecimal
81400
dh4418
Eighty-One Thousand Four Hundred in Base 18 Octodecimal
81401
dh4518
Eighty-One Thousand Four Hundred and One in Base 18 Octodecimal
81402
dh4618
Eighty-One Thousand Four Hundred and Two in Base 18 Octodecimal

Scientific Notation

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

8.1399e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000153f404ah7764918

The reciprocal of 81399 in Base 18 Octodecimal.

Palindrome?

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

The number dh4318 is not a palindrome.

Not A Prime Number

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

Eighty-one thousand three hundred and ninety-nine is a composite number with 8 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand three hundred and ninety-nine 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 eighty-one thousand three hundred and ninety-nine has the following 3 prime factors:

3
318
Three in Base 18 Octodecimal
43
2718
Forty-Three in Base 18 Octodecimal
631
1h118
Six Hundred and Thirty-One in Base 18 Octodecimal

Prime Factorization

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

3181 · 27181 · 1h1181 = dh4318

Base Conversions

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