Q: What are the prime factors of the number 420,022,302?

 A: 2, 3, 7, 79, 277, 457

Why are those the prime factors of the number 420,022,302?

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 420,022,302

420,022,302
Factor Arrows
2210,011,151
Factor Arrows
370,003,717
Factor Arrows
710,000,531
Factor Arrows
79126,589
Factor Arrows
277457

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, 7, 79, 277, 457

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 79 x 277 x 457 = 420,022,302

This can also be written as 21 x 31 x 71 x 791 x 2771 x 4571 = 420,022,302

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


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