Q: What are the prime factors of the number 4,680,320?

 A: 2, 5, 71, 103

Why are those the prime factors of the number 4,680,320?

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 4,680,320

4,680,320
Factor Arrows
22,340,160
Factor Arrows
21,170,080
Factor Arrows
2585,040
Factor Arrows
2292,520
Factor Arrows
2146,260
Factor Arrows
273,130
Factor Arrows
236,565
Factor Arrows
57,313
Factor Arrows
71103

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, 5, 71, 103

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 5 x 71 x 103 = 4,680,320

This can also be written as 27 x 51 x 711 x 1031 = 4,680,320

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


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