Q: What are the prime factors of the number 677,403,104?

 A: 2, 7, 37, 47

Why are those the prime factors of the number 677,403,104?

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 677,403,104

677,403,104
Factor Arrows
2338,701,552
Factor Arrows
2169,350,776
Factor Arrows
284,675,388
Factor Arrows
242,337,694
Factor Arrows
221,168,847
Factor Arrows
73,024,121
Factor Arrows
3781,733
Factor Arrows
372,209
Factor Arrows
4747

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, 37, 47

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 37 x 37 x 47 x 47 = 677,403,104

This can also be written as 25 x 71 x 372 x 472 = 677,403,104

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


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