Q: What are the prime factors of the number 1,319,584?

 A: 2, 7, 43, 137

Why are those the prime factors of the number 1,319,584?

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 1,319,584

1,319,584
Factor Arrows
2659,792
Factor Arrows
2329,896
Factor Arrows
2164,948
Factor Arrows
282,474
Factor Arrows
241,237
Factor Arrows
75,891
Factor Arrows
43137

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, 43, 137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 43 x 137 = 1,319,584

This can also be written as 25 x 71 x 431 x 1371 = 1,319,584

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


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