Q: What are the prime factors of the number 34,657,920?

 A: 2, 3, 5, 11, 547

Why are those the prime factors of the number 34,657,920?

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 34,657,920

34,657,920
Factor Arrows
217,328,960
Factor Arrows
28,664,480
Factor Arrows
24,332,240
Factor Arrows
22,166,120
Factor Arrows
21,083,060
Factor Arrows
2541,530
Factor Arrows
2270,765
Factor Arrows
390,255
Factor Arrows
330,085
Factor Arrows
56,017
Factor Arrows
11547

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, 5, 11, 547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 11 x 547 = 34,657,920

This can also be written as 27 x 32 x 51 x 111 x 5471 = 34,657,920

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


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