[2,3,7,13,19,23,31,43,47,61,73,79,83,89,103,107, 109,113,131,137,139,151,157,163,167,173,181,193, 197,199,211,229,233,239,241,263,271,277,281,283, 293,313,317,337,349,353,359,367,373,379,383,389, 397,401,409,421]