theorem Th12: :: NUMBER02:12
for k, n being Nat st k < 961 & n * n <= k & n is prime & not n = 2 & not n = 3 & not n = 5 & not n = 7 & not n = 11 & not n = 13 & not n = 17 & not n = 19 & not n = 23 holds
n = 29