Q: What are the prime factors of the number 167,306,720?

 A: 2, 5, 7, 149381

Why are those the prime factors of the number 167,306,720?

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 167,306,720

167,306,720
Factor Arrows
283,653,360
Factor Arrows
241,826,680
Factor Arrows
220,913,340
Factor Arrows
210,456,670
Factor Arrows
25,228,335
Factor Arrows
51,045,667
Factor Arrows
7149,381

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, 5, 7, 149381

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 149,381 = 167,306,720

This can also be written as 25 x 51 x 71 x 149,3811 = 167,306,720

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


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