Q: What are the prime factors of the number 5,178,355?

 A: 5, 7, 13, 19, 599

Why are those the prime factors of the number 5,178,355?

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 5,178,355

5,178,355
Factor Arrows
51,035,671
Factor Arrows
7147,953
Factor Arrows
1311,381
Factor Arrows
19599

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:

5, 7, 13, 19, 599

We can check our work by multiplying all of the prime factors together: 5 x 7 x 13 x 19 x 599 = 5,178,355

This can also be written as 51 x 71 x 131 x 191 x 5991 = 5,178,355

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


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