Q: What are the prime factors of the number 421,252,335?

 A: 3, 5, 7, 31, 179, 241

Why are those the prime factors of the number 421,252,335?

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 421,252,335

421,252,335
Factor Arrows
3140,417,445
Factor Arrows
346,805,815
Factor Arrows
59,361,163
Factor Arrows
71,337,309
Factor Arrows
3143,139
Factor Arrows
179241

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:

3, 5, 7, 31, 179, 241

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 31 x 179 x 241 = 421,252,335

This can also be written as 32 x 51 x 71 x 311 x 1791 x 2411 = 421,252,335

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


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