Q: What are the prime factors of the number 117,846,378?

 A: 2, 3, 13, 313, 1609

Why are those the prime factors of the number 117,846,378?

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 117,846,378

117,846,378
Factor Arrows
258,923,189
Factor Arrows
319,641,063
Factor Arrows
36,547,021
Factor Arrows
13503,617
Factor Arrows
3131,609

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, 13, 313, 1609

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 313 x 1,609 = 117,846,378

This can also be written as 21 x 32 x 131 x 3131 x 1,6091 = 117,846,378

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


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