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Prime Number Checker
Check if a number is prime, perform prime factorization, and find adjacent primes
Number Input
Range: -1000000 to 1000000
Quick Examples
Verification Result
Enter an integer and click 'Check Prime' to start
Prime Knowledge
What is a Prime Number?
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. 2 is the smallest prime and the only even prime.
Properties of Primes
There are infinitely many primes, with no largest prime. Primes have important applications in cryptography and computer science.
Prime Factorization
Any integer greater than 1 can be uniquely represented as a product of primes, known as the Fundamental Theorem of Arithmetic.
Special Numbers
0 and 1 are neither prime nor composite. Negative numbers can also be factorized, but usually only positive primes are considered.