Q: What are the prime factors of the number 515,553,334?

 A: 2, 19, 61, 197, 1129

Why are those the prime factors of the number 515,553,334?

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 515,553,334

515,553,334
Factor Arrows
2257,776,667
Factor Arrows
1913,567,193
Factor Arrows
61222,413
Factor Arrows
1971,129

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, 19, 61, 197, 1129

We can check our work by multiplying all of the prime factors together: 2 x 19 x 61 x 197 x 1,129 = 515,553,334

This can also be written as 21 x 191 x 611 x 1971 x 1,1291 = 515,553,334

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


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