These prime factorization worksheets are great for practicing solving the Prime Factorization for a number. Understanding Prime Factors are very important for working with fraction problems. The prime factorization problems may be selected from four different number ranges. The easiest will keep the numbers below 50, and the hardest will keep the numbers below 200. These factorization worksheets will generate 10, 15 or 20 Prime Factorization problems per worksheet.

Example: The Prime Factorization of 12 is 2 x 2 x 3.