Q: What are the prime factors of the number 70,973,496?

 A: 2, 3, 11, 3319

Why are those the prime factors of the number 70,973,496?

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 70,973,496

70,973,496
Factor Arrows
235,486,748
Factor Arrows
217,743,374
Factor Arrows
28,871,687
Factor Arrows
32,957,229
Factor Arrows
3985,743
Factor Arrows
3328,581
Factor Arrows
3109,527
Factor Arrows
336,509
Factor Arrows
113,319

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, 11, 3319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 11 x 3,319 = 70,973,496

This can also be written as 23 x 35 x 111 x 3,3191 = 70,973,496

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


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