Q: What are the prime factors of the number 711,705,400?

 A: 2, 5, 7, 72623

Why are those the prime factors of the number 711,705,400?

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 711,705,400

711,705,400
Factor Arrows
2355,852,700
Factor Arrows
2177,926,350
Factor Arrows
288,963,175
Factor Arrows
517,792,635
Factor Arrows
53,558,527
Factor Arrows
7508,361
Factor Arrows
772,623

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, 7, 72623

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 7 x 72,623 = 711,705,400

This can also be written as 23 x 52 x 72 x 72,6231 = 711,705,400

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


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