Q: What are the prime factors of the number 322,908,160?

 A: 2, 5, 15767

Why are those the prime factors of the number 322,908,160?

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 322,908,160

322,908,160
Factor Arrows
2161,454,080
Factor Arrows
280,727,040
Factor Arrows
240,363,520
Factor Arrows
220,181,760
Factor Arrows
210,090,880
Factor Arrows
25,045,440
Factor Arrows
22,522,720
Factor Arrows
21,261,360
Factor Arrows
2630,680
Factor Arrows
2315,340
Factor Arrows
2157,670
Factor Arrows
278,835
Factor Arrows
515,767

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, 15767

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 2 x 2 x 2 x 2 x 2 x 5 x 15,767 = 322,908,160

This can also be written as 212 x 51 x 15,7671 = 322,908,160

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


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