Prime Factorization, GCF & LCM Game Level 1 (≤ 20) Level 2 (≤ 40) Level 3 (≤ 60) Hide Hints Show Hints Prime Factorization Greatest Common Factor Least Common Multiple Check Answer New Problem Calculator 0 C ⌫ ÷ × 7 8 9 − 4 5 6 + 1 2 3 . 0 =