The Number

81018

Eighty-One Thousand and Eightteen

In Base 5 Quinary Is

100430335

The numbers with a 5 subscript use Base 5 Quinary notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81015
100430305
Eighty-One Thousand and Fifteen in Base 5 Quinary
81016
100430315
Eighty-One Thousand and Sixteen in Base 5 Quinary
81017
100430325
Eighty-One Thousand and Seventeen in Base 5 Quinary
81019
100430345
Eighty-One Thousand and Nineteen in Base 5 Quinary
81020
100430405
Eighty-One Thousand and Twenty in Base 5 Quinary
81021
100430415
Eighty-One Thousand and Twenty-One in Base 5 Quinary

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.

0.0000000440232012243313344131225

The reciprocal of 81018 in Base 5 Quinary.

Palindrome?

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

The number 100430335 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 5 Quinary

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
25
Two in Base 5 Quinary
3
35
Three in Base 5 Quinary
7
125
Seven in Base 5 Quinary
643
100335
Six Hundred and Forty-Three in Base 5 Quinary

Prime Factorization

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

251 · 352 · 1251 · 1003351 = 100430335

Base Conversions

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