1 EASY What is the prime factorization of 10?

 2 EASY What is the prime factorization of 27? 3 $$\times$$ 2 $$\times$$ 27 $$\times$$ 33 $$\times$$ 3 $$\times$$ 31 $$\times$$ 3 $$\times$$ 9None of the above

 3 EASY What is the prime factorization of 23?

 4 MEDIUM What is the prime factorization of 400?

 5 MEDIUM What is the prime factorization of 1000?

 6 MEDIUM What is the prime factorization of 57?

 7 MEDIUM What is the prime factorization of 96?

 8 MEDIUM What is the prime factorization of 98?

 9 HARD Lewis found the prime factorization of a number. It was: 2 $$\times$$ 2 $$\times$$ 3 $$\times$$ 5 $$\times$$ 5 $$\times$$ 7. What number was he factoring?

 10 HARD What is the prime factorization of 396?

 11 HARD What is the prime factorization of 133?