Q: What are the prime factors of the number 125,520,311?

 A: 7, 41, 43, 1453

Why are those the prime factors of the number 125,520,311?

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 125,520,311

125,520,311
Factor Arrows
717,931,473
Factor Arrows
72,561,639
Factor Arrows
4162,479
Factor Arrows
431,453

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:

7, 41, 43, 1453

We can check our work by multiplying all of the prime factors together: 7 x 7 x 41 x 43 x 1,453 = 125,520,311

This can also be written as 72 x 411 x 431 x 1,4531 = 125,520,311

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


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