641
Number 641 properties
- 641 is an odd number.
- 641 is a prime number, which means it is only divisible by 1 and itself.
- 641 is a Sophie Germain prime, which means that 2 x 641 + 1 = 1283 is also a prime number.
Number 641 - properties and curiosities
641 (number)
Prime factorization
Prime factorization of 641: 641.
Divisors
Divisor count: 2
1, 641
Factors of 641 are: 1, 641.
Representations
In octal, 641 is represented as 1201.
In binary, 641 is represented as 1010000001.
In hex, 641 is represented as 281.
Roman numeral: DCXLI
Curiosities
- 641 is part of the infinite sequence of prime numbers.
Related numbers
Quick answers
Is 641 prime?
Yes, 641 is prime.
What are the factors of 641?
1, 641
What is 641 in binary?
1010000001