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