Q: What are the prime factors of the number 255,526,425?

 A: 3, 5, 7, 11, 43

Why are those the prime factors of the number 255,526,425?

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 255,526,425

255,526,425
Factor Arrows
385,175,475
Factor Arrows
328,391,825
Factor Arrows
55,678,365
Factor Arrows
51,135,673
Factor Arrows
7162,239
Factor Arrows
723,177
Factor Arrows
73,311
Factor Arrows
7473
Factor Arrows
1143

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:

3, 5, 7, 11, 43

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 7 x 7 x 7 x 7 x 11 x 43 = 255,526,425

This can also be written as 32 x 52 x 74 x 111 x 431 = 255,526,425

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


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