The Number

81818

Eighty-One Thousand Eight Hundred and Eightteen

In Base 20 Vigesimal Is

a4ai20

The numbers with a 20 subscript use Base 20 Vigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81815
a4af20
Eighty-One Thousand Eight Hundred and Fifteen in Base 20 Vigesimal
81816
a4ag20
Eighty-One Thousand Eight Hundred and Sixteen in Base 20 Vigesimal
81817
a4ah20
Eighty-One Thousand Eight Hundred and Seventeen in Base 20 Vigesimal
81819
a4aj20
Eighty-One Thousand Eight Hundred and Nineteen in Base 20 Vigesimal
81820
a4b020
Eighty-One Thousand Eight Hundred and Twenty in Base 20 Vigesimal
81821
a4b120
Eighty-One Thousand Eight Hundred and Twenty-One in Base 20 Vigesimal

Scientific Notation

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

8.1818e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001j249bddbh0h520

The reciprocal of 81818 in Base 20 Vigesimal.

Palindrome?

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

The number a4ai20 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 eight hundred and eightteen is a composite number with 8 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand eight hundred and eightteen 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 eight hundred and eightteen has the following 3 prime factors:

2
220
Two in Base 20 Vigesimal
11
b20
Eleven in Base 20 Vigesimal
3719
95j20
Three Thousand Seven Hundred and Nineteen in Base 20 Vigesimal

Prime Factorization

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

2201 · b201 · 95j201 = a4ai20

Base Conversions

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