Q: What are the prime factors of the number 420,227,360?

 A: 2, 5, 7, 375203

Why are those the prime factors of the number 420,227,360?

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 420,227,360

420,227,360
Factor Arrows
2210,113,680
Factor Arrows
2105,056,840
Factor Arrows
252,528,420
Factor Arrows
226,264,210
Factor Arrows
213,132,105
Factor Arrows
52,626,421
Factor Arrows
7375,203

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, 375203

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 375,203 = 420,227,360

This can also be written as 25 x 51 x 71 x 375,2031 = 420,227,360

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


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