Q: What are the prime factors of the number 354,550,420?

 A: 2, 5, 7, 79, 32057

Why are those the prime factors of the number 354,550,420?

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 354,550,420

354,550,420
Factor Arrows
2177,275,210
Factor Arrows
288,637,605
Factor Arrows
517,727,521
Factor Arrows
72,532,503
Factor Arrows
7932,057

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, 79, 32057

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 79 x 32,057 = 354,550,420

This can also be written as 22 x 51 x 71 x 791 x 32,0571 = 354,550,420

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


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