Q: What are the prime factors of the number 256,414,424?

 A: 2, 7, 19, 53, 4547

Why are those the prime factors of the number 256,414,424?

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 256,414,424

256,414,424
Factor Arrows
2128,207,212
Factor Arrows
264,103,606
Factor Arrows
232,051,803
Factor Arrows
74,578,829
Factor Arrows
19240,991
Factor Arrows
534,547

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, 19, 53, 4547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 19 x 53 x 4,547 = 256,414,424

This can also be written as 23 x 71 x 191 x 531 x 4,5471 = 256,414,424

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


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