Q: What are the prime factors of the number 331,148,608?

 A: 2, 7, 739171

Why are those the prime factors of the number 331,148,608?

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 331,148,608

331,148,608
Factor Arrows
2165,574,304
Factor Arrows
282,787,152
Factor Arrows
241,393,576
Factor Arrows
220,696,788
Factor Arrows
210,348,394
Factor Arrows
25,174,197
Factor Arrows
7739,171

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, 739171

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 7 x 739,171 = 331,148,608

This can also be written as 26 x 71 x 739,1711 = 331,148,608

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


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