Is 123 a prime number?

Is 123 a prime or composite number?

Answer: Number 123 is not a Prime
123 - is not a Prime Number because it has 4 factors: 1, 3, 41, 123
Number should have exactly two factors to be classified as a Prime number
For 123 to be a prime number it must have only two divisors - 1 and itself (123)

See Also

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 123 a prime or composite number? (The answer is: No). Enter number (e.g. '123') and hit the 'Calculate' button.
Prime numbers are the positive integers having only two factors - 1 and the number itself

Prime numbers list

NumberIs Prime
No
Yes
No
No
No
Yes
No
No
116No
No
118No
No
No
No
No
No
No
No
No
Yes
No
No
130No
Yes
No
No
No
No
No
Yes

FAQ

Is 123 a prime or composite number?

Number 123 is not a Prime

How many factors are in a number 123?

4