Prime checker
Test if n is prime (trial division).
Calculator
How to use
Primes
For very large n use specialized tools.
Educational use only. For assessments, show reasoning and check boundary cases.
Test if n is prime (trial division).
For very large n use specialized tools.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
Primality for integers n ≥ 2
Result
Prime