The Number

81000

Eighty-One Thousand

In Base 7 Septenary Is

4551037

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

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

Nearby Numbers

Positive, nonzero integers within three units

80997
4551007
Eighty Thousand Nine Hundred and Ninety-Seven in Base 7 Septenary
80998
4551017
Eighty Thousand Nine Hundred and Ninety-Eight in Base 7 Septenary
80999
4551027
Eighty Thousand Nine Hundred and Ninety-Nine in Base 7 Septenary
81001
4551047
Eighty-One Thousand and One in Base 7 Septenary
81002
4551057
Eighty-One Thousand and Two in Base 7 Septenary
81003
4551067
Eighty-One Thousand 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.

8.1000e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000013111230423310663247

The reciprocal of 81000 in Base 7 Septenary.

Palindrome?

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

The number 4551037 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 is a composite number with 80 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 is a composite number with 80 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 has the following 3 prime factors:

2
27
Two in Base 7 Septenary
3
37
Three in Base 7 Septenary
5
57
Five 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 · 374 · 573 = 4551037

Base Conversions

The number eighty-one thousand in 35 different bases