Q: What are the prime factors of the number 578,428,416?

 A: 2, 3, 125527

Why are those the prime factors of the number 578,428,416?

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 578,428,416

578,428,416
Factor Arrows
2289,214,208
Factor Arrows
2144,607,104
Factor Arrows
272,303,552
Factor Arrows
236,151,776
Factor Arrows
218,075,888
Factor Arrows
29,037,944
Factor Arrows
24,518,972
Factor Arrows
22,259,486
Factor Arrows
21,129,743
Factor Arrows
3376,581
Factor Arrows
3125,527

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, 3, 125527

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 3 x 3 x 125,527 = 578,428,416

This can also be written as 29 x 32 x 125,5271 = 578,428,416

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


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