Q: What are the prime factors of the number 516,265,540?

 A: 2, 5, 7, 29, 101, 1259

Why are those the prime factors of the number 516,265,540?

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 516,265,540

516,265,540
Factor Arrows
2258,132,770
Factor Arrows
2129,066,385
Factor Arrows
525,813,277
Factor Arrows
73,687,611
Factor Arrows
29127,159
Factor Arrows
1011,259

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, 5, 7, 29, 101, 1259

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 29 x 101 x 1,259 = 516,265,540

This can also be written as 22 x 51 x 71 x 291 x 1011 x 1,2591 = 516,265,540

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


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