Is 991 a prime number?

Is 991 a prime or composite number?

Answer: Number 991 is a Prime
991 - is a Prime Number because it has only 2 factors: 1 and 991 (itself)
Number should have exactly two factors to be classified as a Prime number
Since number 991 has exactly 2 factors - it is a Prime number

See Also

Prime numbers list

NumberIs Prime
976No
Yes
978No
979No
980No
981No
982No
Yes
984No
985No
986No
987No
988No
No
990No
Yes
992No
No
994No
995No
996No
Yes
998No
No
No
No
1002No
1003No
1004No
1005No

About "Is number a Prime" Calculator

This calculator will help you find out if a given number is Prime. For example, it can help you find out is 991 a prime or composite number? (The answer is: Yes). Enter number (e.g. '991') and hit the 'Calculate' button.
Prime numbers are the positive integers having only two factors - 1 and the number itself

FAQ

Is 991 a prime or composite number?

Number 991 is a Prime

How many factors are in a number 991?

2