The Number

643

Six Hundred and Forty-Three

In Base 25 Pentavigesimal Is

10i25

The numbers with a 25 subscript use Base 25 Pentavigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

640
10f25
Six Hundred and Forty in Base 25 Pentavigesimal
641
10g25
Six Hundred and Forty-One in Base 25 Pentavigesimal
642
10h25
Six Hundred and Forty-Two in Base 25 Pentavigesimal
644
10j25
Six Hundred and Forty-Four in Base 25 Pentavigesimal
645
10k25
Six Hundred and Forty-Five in Base 25 Pentavigesimal
646
10l25
Six Hundred and Forty-Six in Base 25 Pentavigesimal

Scientific Notation

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

6.43e2

Reciprocal

A number multiplied with its reciprocal is one.

0.00o7cen66c833e25

The reciprocal of 643 in Base 25 Pentavigesimal.

Palindrome?

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

The number 10i25 is not a palindrome.

A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Six hundred and forty-three is the 117th prime number.   See primes in Base 25 Pentavigesimal

Not A Composite

Composites have more than just these two factors.

Six Hundred and Forty-Three is not a composite number because it has exactly two factors: One and Six Hundred and Forty-Three

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number six hundred and forty-three has the following 1 prime factor:

643
10i25
Six Hundred and Forty-Three in Base 25 Pentavigesimal

Prime Factorization

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

10i251 = 10i25

Base Conversions

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