Q: What are the prime factors of the number 725,371,168?

 A: 2, 127, 178487

Why are those the prime factors of the number 725,371,168?

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 725,371,168

725,371,168
Factor Arrows
2362,685,584
Factor Arrows
2181,342,792
Factor Arrows
290,671,396
Factor Arrows
245,335,698
Factor Arrows
222,667,849
Factor Arrows
127178,487

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, 127, 178487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 127 x 178,487 = 725,371,168

This can also be written as 25 x 1271 x 178,4871 = 725,371,168

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


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