Q: What are the prime factors of the number 612,741,320?

 A: 2, 5, 109, 313, 449

Why are those the prime factors of the number 612,741,320?

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 612,741,320

612,741,320
Factor Arrows
2306,370,660
Factor Arrows
2153,185,330
Factor Arrows
276,592,665
Factor Arrows
515,318,533
Factor Arrows
109140,537
Factor Arrows
313449

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, 109, 313, 449

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 109 x 313 x 449 = 612,741,320

This can also be written as 23 x 51 x 1091 x 3131 x 4491 = 612,741,320

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


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