Q: What are the prime factors of the number 515,413,648?

 A: 2, 103, 149, 2099

Why are those the prime factors of the number 515,413,648?

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 515,413,648

515,413,648
Factor Arrows
2257,706,824
Factor Arrows
2128,853,412
Factor Arrows
264,426,706
Factor Arrows
232,213,353
Factor Arrows
103312,751
Factor Arrows
1492,099

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, 103, 149, 2099

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 103 x 149 x 2,099 = 515,413,648

This can also be written as 24 x 1031 x 1491 x 2,0991 = 515,413,648

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


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