Q: What are the prime factors of the number 709,800?

 A: 2, 3, 5, 7, 13

Why are those the prime factors of the number 709,800?

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 709,800

709,800
Factor Arrows
2354,900
Factor Arrows
2177,450
Factor Arrows
288,725
Factor Arrows
329,575
Factor Arrows
55,915
Factor Arrows
51,183
Factor Arrows
7169
Factor Arrows
1313

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, 5, 7, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 7 x 13 x 13 = 709,800

This can also be written as 23 x 31 x 52 x 71 x 132 = 709,800

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


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