Q: What are the prime factors of the number 78,116,364?

 A: 2, 3, 193, 11243

Why are those the prime factors of the number 78,116,364?

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 78,116,364

78,116,364
Factor Arrows
239,058,182
Factor Arrows
219,529,091
Factor Arrows
36,509,697
Factor Arrows
32,169,899
Factor Arrows
19311,243

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, 193, 11243

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 193 x 11,243 = 78,116,364

This can also be written as 22 x 32 x 1931 x 11,2431 = 78,116,364

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


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