The Number

81643

Eighty-One Thousand Six Hundred and Forty-Three

In Base 20 Vigesimal Is

a42320

The numbers with a 20 subscript use Base 20 Vigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

81640
a42020
Eighty-One Thousand Six Hundred and Forty in Base 20 Vigesimal
81641
a42120
Eighty-One Thousand Six Hundred and Forty-One in Base 20 Vigesimal
81642
a42220
Eighty-One Thousand Six Hundred and Forty-Two in Base 20 Vigesimal
81644
a42420
Eighty-One Thousand Six Hundred and Forty-Four in Base 20 Vigesimal
81645
a42520
Eighty-One Thousand Six Hundred and Forty-Five in Base 20 Vigesimal
81646
a42620
Eighty-One Thousand Six Hundred and Forty-Six in Base 20 Vigesimal

Scientific Notation

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

8.1643e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001j3i0529i017i20

The reciprocal of 81643 in Base 20 Vigesimal.

Palindrome?

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

The number a42320 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 six hundred and forty-three is a composite number with 4 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand six hundred and forty-three is a composite number with 4 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 six hundred and forty-three has the following 2 prime factors:

19
j20
Nineteen in Base 20 Vigesimal
4297
aeh20
Four Thousand Two Hundred and Ninety-Seven in Base 20 Vigesimal

Prime Factorization

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

j201 · aeh201 = a42320

Base Conversions

The number eighty-one thousand six hundred and forty-three in 35 different bases