Q: What are the prime factors of the number 10,211,328?

 A: 2, 3, 277

Why are those the prime factors of the number 10,211,328?

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 10,211,328

10,211,328
Factor Arrows
25,105,664
Factor Arrows
22,552,832
Factor Arrows
21,276,416
Factor Arrows
2638,208
Factor Arrows
2319,104
Factor Arrows
2159,552
Factor Arrows
279,776
Factor Arrows
239,888
Factor Arrows
219,944
Factor Arrows
29,972
Factor Arrows
24,986
Factor Arrows
22,493
Factor Arrows
3831
Factor Arrows
3277

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, 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 2 x 2 x 2 x 2 x 3 x 3 x 277 = 10,211,328

This can also be written as 212 x 32 x 2771 = 10,211,328

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


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