Q: What are the prime factors of the number 6,245,778?

 A: 2, 3, 7, 11, 1229

Why are those the prime factors of the number 6,245,778?

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 6,245,778

6,245,778
Factor Arrows
23,122,889
Factor Arrows
31,040,963
Factor Arrows
7148,709
Factor Arrows
1113,519
Factor Arrows
111,229

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, 11, 1229

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 11 x 11 x 1,229 = 6,245,778

This can also be written as 21 x 31 x 71 x 112 x 1,2291 = 6,245,778

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


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