643
Number 643 properties
- 643 is an odd number.
- 643 is a prime number, which means it is only divisible by 1 and itself.
Number 643 - properties and curiosities
643 (number)
Prime factorization
Prime factorization of 643: 643.
Divisors
Divisor count: 2
1, 643
Factors of 643 are: 1, 643.
Representations
In octal, 643 is represented as 1203.
In binary, 643 is represented as 1010000011.
In hex, 643 is represented as 283.
Roman numeral: DCXLIII
Curiosities
- 643 is part of the infinite sequence of prime numbers.
Related numbers
Quick answers
Is 643 prime?
Yes, 643 is prime.
What are the factors of 643?
1, 643
What is 643 in binary?
1010000011