Q: What are the prime factors of the number 1,571,544?

 A: 2, 3, 13, 23, 73

Why are those the prime factors of the number 1,571,544?

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 1,571,544

1,571,544
Factor Arrows
2785,772
Factor Arrows
2392,886
Factor Arrows
2196,443
Factor Arrows
365,481
Factor Arrows
321,827
Factor Arrows
131,679
Factor Arrows
2373

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, 13, 23, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 13 x 23 x 73 = 1,571,544

This can also be written as 23 x 32 x 131 x 231 x 731 = 1,571,544

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


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