Q: What are the prime factors of the number 515,456?

 A: 2, 4027

Why are those the prime factors of the number 515,456?

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 515,456

515,456
Factor Arrows
2257,728
Factor Arrows
2128,864
Factor Arrows
264,432
Factor Arrows
232,216
Factor Arrows
216,108
Factor Arrows
28,054
Factor Arrows
24,027

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, 4027

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 4,027 = 515,456

This can also be written as 27 x 4,0271 = 515,456

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


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