Q: What are the prime factors of the number 10,121,216?

 A: 2, 7, 353

Why are those the prime factors of the number 10,121,216?

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 10,121,216

10,121,216
Factor Arrows
25,060,608
Factor Arrows
22,530,304
Factor Arrows
21,265,152
Factor Arrows
2632,576
Factor Arrows
2316,288
Factor Arrows
2158,144
Factor Arrows
279,072
Factor Arrows
239,536
Factor Arrows
219,768
Factor Arrows
29,884
Factor Arrows
24,942
Factor Arrows
22,471
Factor Arrows
7353

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, 7, 353

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 7 x 353 = 10,121,216

This can also be written as 212 x 71 x 3531 = 10,121,216

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


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