The Number

81399

Eighty-One Thousand Three Hundred and Ninety-Nine

In Base 7 Septenary Is

4562137

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

For more familiar numbers: See Eighty-One Thousand Three Hundred and Ninety-Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81396
4562107
Eighty-One Thousand Three Hundred and Ninety-Six in Base 7 Septenary
81397
4562117
Eighty-One Thousand Three Hundred and Ninety-Seven in Base 7 Septenary
81398
4562127
Eighty-One Thousand Three Hundred and Ninety-Eight in Base 7 Septenary
81400
4562147
Eighty-One Thousand Four Hundred in Base 7 Septenary
81401
4562157
Eighty-One Thousand Four Hundred and One in Base 7 Septenary
81402
4562167
Eighty-One Thousand Four Hundred and Two in Base 7 Septenary

Scientific Notation

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

8.1399e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000001305515320664045117

The reciprocal of 81399 in Base 7 Septenary.

Palindrome?

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

The number 4562137 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 three hundred and ninety-nine is a composite number with 8 total factors (including 1 and itself).   See primes in Base 7 Septenary

A Composite

Composites have more than just these two factors.

Eighty-one thousand three hundred and ninety-nine 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 three hundred and ninety-nine has the following 3 prime factors:

3
37
Three in Base 7 Septenary
43
617
Forty-Three in Base 7 Septenary
631
15617
Six Hundred and Thirty-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

371 · 6171 · 156171 = 4562137

Base Conversions

The number eighty-one thousand three hundred and ninety-nine in 35 different bases