Is 521 a prime number?

Is 521 a prime or composite number?

Answer: Number 521 is a Prime
521 - is a Prime Number because it has only 2 factors: 1 and 521 (itself)
Number should have exactly two factors to be classified as a Prime number
Since number 521 has exactly 2 factors - it is a Prime number

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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 521 a prime or composite number? (The answer is: Yes). Enter number (e.g. '521') 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
506No
No
508No
Yes
510No
No
No
No
514No
515No
516No
No
518No
519No
520No
Yes
522No
Yes
524No
No
526No
No
528No
No
530No
No
No
No
534No
535No

FAQ

Is 521 a prime or composite number?

Number 521 is a Prime

How many factors are in a number 521?

2