The Number

12818

Twelve Thousand Eight Hundred and Eightteen

In Base 21 Unovigesimal Is

181821

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Twelve Thousand Eight Hundred and Eightteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12815
181521
Twelve Thousand Eight Hundred and Fifteen in Base 21 Unovigesimal
12816
181621
Twelve Thousand Eight Hundred and Sixteen in Base 21 Unovigesimal
12817
181721
Twelve Thousand Eight Hundred and Seventeen in Base 21 Unovigesimal
12819
181921
Twelve Thousand Eight Hundred and Nineteen in Base 21 Unovigesimal
12820
181a21
Twelve Thousand Eight Hundred and Twenty in Base 21 Unovigesimal
12821
181b21
Twelve Thousand Eight Hundred and Twenty-One in Base 21 Unovigesimal

Scientific Notation

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

1.2818e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000f3d197k6ah821

The reciprocal of 12818 in Base 21 Unovigesimal.

Palindrome?

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

The number 181821 is not a palindrome.

Not A Prime Number

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

Twelve thousand eight hundred and eightteen is a composite number with 16 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Twelve thousand eight hundred and eightteen is a composite number with 16 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 twelve thousand eight hundred and eightteen has the following 4 prime factors:

2
221
Two in Base 21 Unovigesimal
13
d21
Thirteen in Base 21 Unovigesimal
17
h21
Seventeen in Base 21 Unovigesimal
29
1821
Twenty-Nine in Base 21 Unovigesimal

Prime Factorization

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

2211 · d211 · h211 · 18211 = 181821

Base Conversions

The number twelve thousand eight hundred and eightteen in 35 different bases