The Number

81500

Eighty-One Thousand Five Hundred

In Base 7 Septenary Is

4564167

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

For more familiar numbers: See Eighty-One Thousand Five Hundred in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81497
4564137
Eighty-One Thousand Four Hundred and Ninety-Seven in Base 7 Septenary
81498
4564147
Eighty-One Thousand Four Hundred and Ninety-Eight in Base 7 Septenary
81499
4564157
Eighty-One Thousand Four Hundred and Ninety-Nine in Base 7 Septenary
81501
4564207
Eighty-One Thousand Five Hundred and One in Base 7 Septenary
81502
4564217
Eighty-One Thousand Five Hundred and Two in Base 7 Septenary
81503
4564227
Eighty-One Thousand Five Hundred and Three in Base 7 Septenary

Scientific Notation

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

8.1500e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000013050645133154543167

The reciprocal of 81500 in Base 7 Septenary.

Palindrome?

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

The number 4564167 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 five hundred is a composite number with 24 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 five hundred is a composite number with 24 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 five hundred has the following 3 prime factors:

2
27
Two in Base 7 Septenary
5
57
Five in Base 7 Septenary
163
3227
One Hundred and Sixty-Three in Base 7 Septenary

Prime Factorization

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

272 · 573 · 32271 = 4564167

Base Conversions

The number eighty-one thousand five hundred in 35 different bases