Q: What are the prime factors of the number 352,225,440?

 A: 2, 3, 5, 7, 83, 421

Why are those the prime factors of the number 352,225,440?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 352,225,440

352,225,440
Factor Arrows
2176,112,720
Factor Arrows
288,056,360
Factor Arrows
244,028,180
Factor Arrows
222,014,090
Factor Arrows
211,007,045
Factor Arrows
33,669,015
Factor Arrows
31,223,005
Factor Arrows
5244,601
Factor Arrows
734,943
Factor Arrows
83421

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 7, 83, 421

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 7 x 83 x 421 = 352,225,440

This can also be written as 25 x 32 x 51 x 71 x 831 x 4211 = 352,225,440

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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