Q: What are the prime factors of the number 5,210,625?

 A: 3, 5, 7, 397

Why are those the prime factors of the number 5,210,625?

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 5,210,625

5,210,625
Factor Arrows
31,736,875
Factor Arrows
5347,375
Factor Arrows
569,475
Factor Arrows
513,895
Factor Arrows
52,779
Factor Arrows
7397

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, 397

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 5 x 7 x 397 = 5,210,625

This can also be written as 31 x 54 x 71 x 3971 = 5,210,625

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


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