lines 7, 8, &12 "primes" are underline in red (prime cannot be resolved) is what pops up when i hover over the x's.

i don't get why that is.

package assignment7; public class Exercise3 { public static void main(String[] args) { Prime.setSize(1000); for (int p = Primes.next(); p < 30; p = Primes.next()) { int n = (int)Math.round(Math.pow(2,p)) - 1; System.out.printf("%d\t2^%d-1%d", p, p, n); if (Primes.isPrime(n)) { System.out.println(" is prime "); } else { System.out.println(" is not prime "); } } } }