Q: What are the prime factors of the number 70,912?

 A: 2, 277

Why are those the prime factors of the number 70,912?

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 70,912

70,912
Factor Arrows
235,456
Factor Arrows
217,728
Factor Arrows
28,864
Factor Arrows
24,432
Factor Arrows
22,216
Factor Arrows
21,108
Factor Arrows
2554
Factor Arrows
2277

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, 277

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 2 x 277 = 70,912

This can also be written as 28 x 2771 = 70,912

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


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