Q: What are the prime factors of the number 257,005,504?

 A: 2, 7, 573673

Why are those the prime factors of the number 257,005,504?

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 257,005,504

257,005,504
Factor Arrows
2128,502,752
Factor Arrows
264,251,376
Factor Arrows
232,125,688
Factor Arrows
216,062,844
Factor Arrows
28,031,422
Factor Arrows
24,015,711
Factor Arrows
7573,673

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, 573673

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 7 x 573,673 = 257,005,504

This can also be written as 26 x 71 x 573,6731 = 257,005,504

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


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