Q: What are the prime factors of the number 1,417,216?

 A: 2, 173

Why are those the prime factors of the number 1,417,216?

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 1,417,216

1,417,216
Factor Arrows
2708,608
Factor Arrows
2354,304
Factor Arrows
2177,152
Factor Arrows
288,576
Factor Arrows
244,288
Factor Arrows
222,144
Factor Arrows
211,072
Factor Arrows
25,536
Factor Arrows
22,768
Factor Arrows
21,384
Factor Arrows
2692
Factor Arrows
2346
Factor Arrows
2173

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, 173

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 2 x 173 = 1,417,216

This can also be written as 213 x 1731 = 1,417,216

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


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