Q: What are the prime factors of the number 355,908?

 A: 2, 3, 7, 19, 223

Why are those the prime factors of the number 355,908?

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 355,908

355,908
Factor Arrows
2177,954
Factor Arrows
288,977
Factor Arrows
329,659
Factor Arrows
74,237
Factor Arrows
19223

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, 7, 19, 223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 19 x 223 = 355,908

This can also be written as 22 x 31 x 71 x 191 x 2231 = 355,908

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


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