Q: What are the prime factors of the number 3,130,560?

 A: 2, 3, 5, 1087

Why are those the prime factors of the number 3,130,560?

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 3,130,560

3,130,560
Factor Arrows
21,565,280
Factor Arrows
2782,640
Factor Arrows
2391,320
Factor Arrows
2195,660
Factor Arrows
297,830
Factor Arrows
248,915
Factor Arrows
316,305
Factor Arrows
35,435
Factor Arrows
51,087

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, 1087

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 3 x 3 x 5 x 1,087 = 3,130,560

This can also be written as 26 x 32 x 51 x 1,0871 = 3,130,560

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


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