Prime Number Generator & Tester
Test if a number is prime and generate all prime numbers up to N using Sieve of Eratosthenes
준비 중인 도구입니다.
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
Verify and generate prime numbers. Check individual primality and calculate complete listings of prime numbers up to N.
How to use
- Enter a target integer to inspect its primality status and view its divisor structure.
- Specify the upper limit N for generation.
- Review the Sieve of Eratosthenes output table, total prime counts, and copy the list.
FAQ
- 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. The number 2 is the only even prime number.