The Number

21318

Twenty-One Thousand Three Hundred and Eightteen

In Base 8 Octal Is

515068

The numbers with a 8 subscript use Base 8 Octal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21315
515038
Twenty-One Thousand Three Hundred and Fifteen in Base 8 Octal
21316
515048
Twenty-One Thousand Three Hundred and Sixteen in Base 8 Octal
21317
515058
Twenty-One Thousand Three Hundred and Seventeen in Base 8 Octal
21319
515078
Twenty-One Thousand Three Hundred and Nineteen in Base 8 Octal
21320
515108
Twenty-One Thousand Three Hundred and Twenty in Base 8 Octal
21321
515118
Twenty-One Thousand Three Hundred and Twenty-One in Base 8 Octal

Scientific Notation

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

2.1318e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00001422776631120740268

The reciprocal of 21318 in Base 8 Octal.

Palindrome?

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

The number 515068 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 three hundred and eightteen is a composite number with 32 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

Twenty-one thousand three hundred and eightteen is a composite number with 32 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 three hundred and eightteen has the following 5 prime factors:

2
28
Two in Base 8 Octal
3
38
Three in Base 8 Octal
11
138
Eleven in Base 8 Octal
17
218
Seventeen in Base 8 Octal
19
238
Nineteen in Base 8 Octal

Prime Factorization

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

281 · 381 · 1381 · 2181 · 2381 = 515068

Base Conversions

The number twenty-one thousand three hundred and eightteen in 35 different bases