The Number

81018

Eighty-One Thousand and Eightteen

In Base 19 Nonadecimal Is

bf8219

The numbers with a 19 subscript use Base 19 Nonadecimal notation.

For more familiar numbers: See Eighty-One Thousand and Eightteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81015
bf7i19
Eighty-One Thousand and Fifteen in Base 19 Nonadecimal
81016
bf8019
Eighty-One Thousand and Sixteen in Base 19 Nonadecimal
81017
bf8119
Eighty-One Thousand and Seventeen in Base 19 Nonadecimal
81019
bf8319
Eighty-One Thousand and Nineteen in Base 19 Nonadecimal
81020
bf8419
Eighty-One Thousand and Twenty in Base 19 Nonadecimal
81021
bf8519
Eighty-One Thousand and Twenty-One in Base 19 Nonadecimal

Scientific Notation

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

8.1018e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001bad00c54a44hb19

The reciprocal of 81018 in Base 19 Nonadecimal.

Palindrome?

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

The number bf8219 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 and eightteen is a composite number with 24 total factors (including 1 and itself).   See primes in Base 19 Nonadecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand and eightteen is a composite number with 24 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 and eightteen has the following 4 prime factors:

2
219
Two in Base 19 Nonadecimal
3
319
Three in Base 19 Nonadecimal
7
719
Seven in Base 19 Nonadecimal
643
1eg19
Six Hundred and Forty-Three in Base 19 Nonadecimal

Prime Factorization

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

2191 · 3192 · 7191 · 1eg191 = bf8219

Base Conversions

The number eighty-one thousand and eightteen in 35 different bases