Q: What are the prime factors of the number 785,200?

 A: 2, 5, 13, 151

Why are those the prime factors of the number 785,200?

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 785,200

785,200
Factor Arrows
2392,600
Factor Arrows
2196,300
Factor Arrows
298,150
Factor Arrows
249,075
Factor Arrows
59,815
Factor Arrows
51,963
Factor Arrows
13151

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, 5, 13, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 13 x 151 = 785,200

This can also be written as 24 x 52 x 131 x 1511 = 785,200

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


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