Q: What are the prime factors of the number 355,641,363?

 A: 3, 7, 11, 167, 439

Why are those the prime factors of the number 355,641,363?

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 355,641,363

355,641,363
Factor Arrows
3118,547,121
Factor Arrows
339,515,707
Factor Arrows
75,645,101
Factor Arrows
7806,443
Factor Arrows
1173,313
Factor Arrows
167439

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, 7, 11, 167, 439

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 7 x 11 x 167 x 439 = 355,641,363

This can also be written as 32 x 72 x 111 x 1671 x 4391 = 355,641,363

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


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