Q: What are the prime factors of the number 68,715,248?

 A: 2, 7, 19, 659

Why are those the prime factors of the number 68,715,248?

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 68,715,248

68,715,248
Factor Arrows
234,357,624
Factor Arrows
217,178,812
Factor Arrows
28,589,406
Factor Arrows
24,294,703
Factor Arrows
7613,529
Factor Arrows
787,647
Factor Arrows
712,521
Factor Arrows
19659

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, 7, 19, 659

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 7 x 19 x 659 = 68,715,248

This can also be written as 24 x 73 x 191 x 6591 = 68,715,248

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


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