Q: What are the prime factors of the number 700,128?

 A: 2, 3, 11, 13, 17

Why are those the prime factors of the number 700,128?

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 700,128

700,128
Factor Arrows
2350,064
Factor Arrows
2175,032
Factor Arrows
287,516
Factor Arrows
243,758
Factor Arrows
221,879
Factor Arrows
37,293
Factor Arrows
32,431
Factor Arrows
11221
Factor Arrows
1317

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, 13, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 13 x 17 = 700,128

This can also be written as 25 x 32 x 111 x 131 x 171 = 700,128

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


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