Prime Number Checker
Check if a number is prime and see its factors
How to use this checker:
🔢 Prime Number Definition
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
Example: 7 is prime (factors: 1, 7), but 15 is not (factors: 1, 3, 5, 15)
🎓 Educational Use
Use case: Learn about prime numbers and practice identifying them.
🔐 Cryptography
Use case: Prime numbers are fundamental in encryption and security algorithms.
Number Input
Enter a number to check if it's prime
Result
Prime status and factors
Enter a number and click "Check Prime"
Prime Number Facts
First 10 Prime Numbers:
2357111317192329
Properties:
- 2 is the only even prime number
- All other primes are odd
- There are infinitely many primes
- 1 is not considered prime
Note: For very large numbers, the calculation may take longer. This tool uses an efficient algorithm that checks divisors up to the square root of the number.