Q: What are the prime factors of the number 78,034,005?

 A: 3, 5, 7, 191, 1297

Why are those the prime factors of the number 78,034,005?

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 78,034,005

78,034,005
Factor Arrows
326,011,335
Factor Arrows
38,670,445
Factor Arrows
51,734,089
Factor Arrows
7247,727
Factor Arrows
1911,297

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:

3, 5, 7, 191, 1297

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 191 x 1,297 = 78,034,005

This can also be written as 32 x 51 x 71 x 1911 x 1,2971 = 78,034,005

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


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