Q: What are the prime factors of the number 402,025,208?

 A: 2, 13, 829, 4663

Why are those the prime factors of the number 402,025,208?

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 402,025,208

402,025,208
Factor Arrows
2201,012,604
Factor Arrows
2100,506,302
Factor Arrows
250,253,151
Factor Arrows
133,865,627
Factor Arrows
8294,663

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, 13, 829, 4663

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 829 x 4,663 = 402,025,208

This can also be written as 23 x 131 x 8291 x 4,6631 = 402,025,208

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


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