Prime Factors Math Worksheets
October 16th, 2008
What are the Prime factors of 136?
Dividing 136 by the smallest prime number, 2.
136 ÷ 2 = 68
| 136 = 2 x 68 |
Dividing 68 by the smallest prime number, 2.
68 ÷ 2 = 34
| 136 = 2 x 2 x 34 |
Dividing 34 by the smallest prime number, 2.
34 ÷ 2 = 17
| 136 = 2 x 2 x 2 x 17 |
Dividing 17 by the smallest prime number, 2.
17 ÷ 2 = 8.5, not an integer (whole number so move on to the next prime number)
Once you have found a prime factor, keep dividing the remainder by the same prime factor until the remainder is no longer a whole number (an integer). When that happens, move on to the next prime number.
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