The Number

21208

Twenty-One Thousand Two Hundred and Eight

In Base 7 Septenary Is

1155557

The numbers with a 7 subscript use Base 7 Septenary notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21205
1155527
Twenty-One Thousand Two Hundred and Five in Base 7 Septenary
21206
1155537
Twenty-One Thousand Two Hundred and Six in Base 7 Septenary
21207
1155547
Twenty-One Thousand Two Hundred and Seven in Base 7 Septenary
21209
1155567
Twenty-One Thousand Two Hundred and Nine in Base 7 Septenary
21210
1155607
Twenty-One Thousand Two Hundred and Ten in Base 7 Septenary
21211
1155617
Twenty-One Thousand Two Hundred and Eleven in Base 7 Septenary

Scientific Notation

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

2.1208e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000053555164241642245647

The reciprocal of 21208 in Base 7 Septenary.

Palindrome?

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

The number 1155557 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 two hundred and eight is a composite number with 16 total factors (including 1 and itself).   See primes in Base 7 Septenary

A Composite

Composites have more than just these two factors.

Twenty-one thousand two hundred and eight 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 twenty-one thousand two hundred and eight has the following 3 prime factors:

2
27
Two in Base 7 Septenary
11
147
Eleven in Base 7 Septenary
241
4637
Two Hundred and Forty-One in Base 7 Septenary

Prime Factorization

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

273 · 1471 · 46371 = 1155557

Base Conversions

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