Q: What are the prime factors of the number 3,077,760?

 A: 2, 3, 5, 7, 229

Why are those the prime factors of the number 3,077,760?

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 3,077,760

3,077,760
Factor Arrows
21,538,880
Factor Arrows
2769,440
Factor Arrows
2384,720
Factor Arrows
2192,360
Factor Arrows
296,180
Factor Arrows
248,090
Factor Arrows
224,045
Factor Arrows
38,015
Factor Arrows
51,603
Factor Arrows
7229

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, 5, 7, 229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 7 x 229 = 3,077,760

This can also be written as 27 x 31 x 51 x 71 x 2291 = 3,077,760

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


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