Q: What are the prime factors of the number 247,431,348?

 A: 2, 3, 53, 1601

Why are those the prime factors of the number 247,431,348?

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 247,431,348

247,431,348
Factor Arrows
2123,715,674
Factor Arrows
261,857,837
Factor Arrows
320,619,279
Factor Arrows
36,873,093
Factor Arrows
32,291,031
Factor Arrows
3763,677
Factor Arrows
3254,559
Factor Arrows
384,853
Factor Arrows
531,601

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, 3, 53, 1601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 3 x 53 x 1,601 = 247,431,348

This can also be written as 22 x 36 x 531 x 1,6011 = 247,431,348

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


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