Q: What are the prime factors of the number 776,178?

 A: 2, 3, 13, 31, 107

Why are those the prime factors of the number 776,178?

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 776,178

776,178
Factor Arrows
2388,089
Factor Arrows
3129,363
Factor Arrows
343,121
Factor Arrows
133,317
Factor Arrows
31107

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, 31, 107

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 31 x 107 = 776,178

This can also be written as 21 x 32 x 131 x 311 x 1071 = 776,178

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


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