Q: What are the prime factors of the number 427,370,720?

 A: 2, 5, 7, 37, 10313

Why are those the prime factors of the number 427,370,720?

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 427,370,720

427,370,720
Factor Arrows
2213,685,360
Factor Arrows
2106,842,680
Factor Arrows
253,421,340
Factor Arrows
226,710,670
Factor Arrows
213,355,335
Factor Arrows
52,671,067
Factor Arrows
7381,581
Factor Arrows
3710,313

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, 37, 10313

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 37 x 10,313 = 427,370,720

This can also be written as 25 x 51 x 71 x 371 x 10,3131 = 427,370,720

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


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