Q: What are the prime factors of the number 403,420,410?

 A: 2, 3, 5, 43, 104243

Why are those the prime factors of the number 403,420,410?

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 403,420,410

403,420,410
Factor Arrows
2201,710,205
Factor Arrows
367,236,735
Factor Arrows
322,412,245
Factor Arrows
54,482,449
Factor Arrows
43104,243

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, 5, 43, 104243

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 43 x 104,243 = 403,420,410

This can also be written as 21 x 32 x 51 x 431 x 104,2431 = 403,420,410

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


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