Q: What are the prime factors of the number 373,303,168?

 A: 2, 7, 53, 1123

Why are those the prime factors of the number 373,303,168?

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 373,303,168

373,303,168
Factor Arrows
2186,651,584
Factor Arrows
293,325,792
Factor Arrows
246,662,896
Factor Arrows
223,331,448
Factor Arrows
211,665,724
Factor Arrows
25,832,862
Factor Arrows
22,916,431
Factor Arrows
7416,633
Factor Arrows
759,519
Factor Arrows
531,123

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, 7, 53, 1123

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 7 x 53 x 1,123 = 373,303,168

This can also be written as 27 x 72 x 531 x 1,1231 = 373,303,168

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


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