Q: What are the prime factors of the number 77,108,346?

 A: 2, 3, 7, 19, 31, 1039

Why are those the prime factors of the number 77,108,346?

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 77,108,346

77,108,346
Factor Arrows
238,554,173
Factor Arrows
312,851,391
Factor Arrows
34,283,797
Factor Arrows
7611,971
Factor Arrows
1932,209
Factor Arrows
311,039

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, 7, 19, 31, 1039

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 19 x 31 x 1,039 = 77,108,346

This can also be written as 21 x 32 x 71 x 191 x 311 x 1,0391 = 77,108,346

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


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