Prime Number Checker
Verify instantly whether a number is prime or composite
Prime Number Checker
Enter a number to check if it is prime
Example:
Input: 13
Output: 13 IS a prime number.
Frequently Asked Questions (FAQs)
A prime number is a natural number greater than 1 that has no divisors other than 1 and itself. Example: 2, 3, 5, 7, 11.
The smallest prime number is 2. It is also the only even prime number.
To check if a number is prime, test if it is divisible by any integer from 2 up to its square root.
Prime numbers are used in cryptography, computer security, hashing algorithms, and mathematics.
No. By definition, prime numbers must be greater than 1.
