191
Number 191 properties
- 191 is an odd number.
- 191 is a palindrome.
- 191 is a prime number, which means it is only divisible by 1 and itself.
- 191 is a Sophie Germain prime, which means that 2 x 191 + 1 = 383 is also a prime number.
Number 191 - properties and curiosities
191 (number)
Prime factorization
Prime factorization of 191: 191.
Divisors
Divisor count: 2
1, 191
Factors of 191 are: 1, 191.
Representations
In octal, 191 is represented as 277.
In binary, 191 is represented as 10111111.
In hex, 191 is represented as BF.
Roman numeral: CXCI
Curiosities
- 191 is part of the infinite sequence of prime numbers.
- 191 reads the same from left to right and right to left.
Related numbers
Quick answers
Is 191 prime?
Yes, 191 is prime.
What are the factors of 191?
1, 191
What is 191 in binary?
10111111