Q: What are the prime factors of the number 68,145,200?

 A: 2, 5, 170363

Why are those the prime factors of the number 68,145,200?

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 68,145,200

68,145,200
Factor Arrows
234,072,600
Factor Arrows
217,036,300
Factor Arrows
28,518,150
Factor Arrows
24,259,075
Factor Arrows
5851,815
Factor Arrows
5170,363

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, 170363

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 170,363 = 68,145,200

This can also be written as 24 x 52 x 170,3631 = 68,145,200

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


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