Q: What are the prime factors of the number 6,445,312?

 A: 2, 17, 1481

Why are those the prime factors of the number 6,445,312?

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 6,445,312

6,445,312
Factor Arrows
23,222,656
Factor Arrows
21,611,328
Factor Arrows
2805,664
Factor Arrows
2402,832
Factor Arrows
2201,416
Factor Arrows
2100,708
Factor Arrows
250,354
Factor Arrows
225,177
Factor Arrows
171,481

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, 17, 1481

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 17 x 1,481 = 6,445,312

This can also be written as 28 x 171 x 1,4811 = 6,445,312

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


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