The Number

81

Eighty-One

In Base 17 Septendecimal Is

4d17

The numbers with a 17 subscript use Base 17 Septendecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

78
4a17
Seventy-Eight in Base 17 Septendecimal
79
4b17
Seventy-Nine in Base 17 Septendecimal
80
4c17
Eighty in Base 17 Septendecimal
82
4e17
Eighty-Two in Base 17 Septendecimal
83
4f17
Eighty-Three in Base 17 Septendecimal
84
4g17
Eighty-Four in Base 17 Septendecimal

Scientific Notation

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

8.1e1

Reciprocal

A number multiplied with its reciprocal is one.

0.039b21b93gd75ee17

The reciprocal of 81 in Base 17 Septendecimal.

Palindrome?

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

The number 4d17 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 is a composite number with 5 total factors (including 1 and itself).   See primes in Base 17 Septendecimal

A Composite

Composites have more than just these two factors.

Eighty-one is a composite number with 5 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 has the following 1 prime factor:

3
317
Three in Base 17 Septendecimal

Prime Factorization

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

3174 = 4d17

Base Conversions

The number eighty-one in 35 different bases