The Number

21866

Twenty-One Thousand Eight Hundred and Sixty-Six

In Base 13 Tridecimal Is

9c5013

The numbers with a 13 subscript use Base 13 Tridecimal notation.

For more familiar numbers: See Twenty-One Thousand Eight Hundred and Sixty-Six in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21863
9c4a13
Twenty-One Thousand Eight Hundred and Sixty-Three in Base 13 Tridecimal
21864
9c4b13
Twenty-One Thousand Eight Hundred and Sixty-Four in Base 13 Tridecimal
21865
9c4c13
Twenty-One Thousand Eight Hundred and Sixty-Five in Base 13 Tridecimal
21867
9c5113
Twenty-One Thousand Eight Hundred and Sixty-Seven in Base 13 Tridecimal
21868
9c5213
Twenty-One Thousand Eight Hundred and Sixty-Eight in Base 13 Tridecimal
21869
9c5313
Twenty-One Thousand Eight Hundred and Sixty-Nine in Base 13 Tridecimal

Scientific Notation

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

2.1866e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00013c98b8555832913

The reciprocal of 21866 in Base 13 Tridecimal.

Palindrome?

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

The number 9c5013 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand eight hundred and sixty-six is a composite number with 12 total factors (including 1 and itself).   See primes in Base 13 Tridecimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand eight hundred and sixty-six is a composite number with 12 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 twenty-one thousand eight hundred and sixty-six has the following 3 prime factors:

2
213
Two in Base 13 Tridecimal
13
1013
Thirteen in Base 13 Tridecimal
29
2313
Twenty-Nine in Base 13 Tridecimal

Prime Factorization

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

2131 · 10131 · 23132 = 9c5013

Base Conversions

The number twenty-one thousand eight hundred and sixty-six in 35 different bases