Q: What are the prime factors of the number 42,703,808?

 A: 2, 7, 199, 479

Why are those the prime factors of the number 42,703,808?

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 42,703,808

42,703,808
Factor Arrows
221,351,904
Factor Arrows
210,675,952
Factor Arrows
25,337,976
Factor Arrows
22,668,988
Factor Arrows
21,334,494
Factor Arrows
2667,247
Factor Arrows
795,321
Factor Arrows
199479

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, 199, 479

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 7 x 199 x 479 = 42,703,808

This can also be written as 26 x 71 x 1991 x 4791 = 42,703,808

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


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