Q: What are the prime factors of the number 1,564,544?

 A: 2, 17, 719

Why are those the prime factors of the number 1,564,544?

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 1,564,544

1,564,544
Factor Arrows
2782,272
Factor Arrows
2391,136
Factor Arrows
2195,568
Factor Arrows
297,784
Factor Arrows
248,892
Factor Arrows
224,446
Factor Arrows
212,223
Factor Arrows
17719

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, 17, 719

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 17 x 719 = 1,564,544

This can also be written as 27 x 171 x 7191 = 1,564,544

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


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