Q: What are the prime factors of the number 1,522,432?

 A: 2, 19, 313

Why are those the prime factors of the number 1,522,432?

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 1,522,432

1,522,432
Factor Arrows
2761,216
Factor Arrows
2380,608
Factor Arrows
2190,304
Factor Arrows
295,152
Factor Arrows
247,576
Factor Arrows
223,788
Factor Arrows
211,894
Factor Arrows
25,947
Factor Arrows
19313

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, 19, 313

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 19 x 313 = 1,522,432

This can also be written as 28 x 191 x 3131 = 1,522,432

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


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