Q: What are the prime factors of the number 425,406,436?

 A: 2, 7, 13, 17, 23, 61

Why are those the prime factors of the number 425,406,436?

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 425,406,436

425,406,436
Factor Arrows
2212,703,218
Factor Arrows
2106,351,609
Factor Arrows
715,193,087
Factor Arrows
72,170,441
Factor Arrows
7310,063
Factor Arrows
1323,851
Factor Arrows
171,403
Factor Arrows
2361

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, 13, 17, 23, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 7 x 13 x 17 x 23 x 61 = 425,406,436

This can also be written as 22 x 73 x 131 x 171 x 231 x 611 = 425,406,436

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


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