1. 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?

 
2. HARD

What is the prime factorization of 396?

 
3. HARD

What is the prime factorization of 133?