Q: What are the prime factors of the number 8,217,288?

 A: 2, 3, 1409

Why are those the prime factors of the number 8,217,288?

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 8,217,288

8,217,288
Factor Arrows
24,108,644
Factor Arrows
22,054,322
Factor Arrows
21,027,161
Factor Arrows
3342,387
Factor Arrows
3114,129
Factor Arrows
338,043
Factor Arrows
312,681
Factor Arrows
34,227
Factor Arrows
31,409

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, 1409

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 3 x 1,409 = 8,217,288

This can also be written as 23 x 36 x 1,4091 = 8,217,288

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


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