Q: What are the prime factors of the number 66,670,080?

 A: 2, 3, 5, 8681

Why are those the prime factors of the number 66,670,080?

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 66,670,080

66,670,080
Factor Arrows
233,335,040
Factor Arrows
216,667,520
Factor Arrows
28,333,760
Factor Arrows
24,166,880
Factor Arrows
22,083,440
Factor Arrows
21,041,720
Factor Arrows
2520,860
Factor Arrows
2260,430
Factor Arrows
2130,215
Factor Arrows
343,405
Factor Arrows
58,681

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, 8681

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 2 x 2 x 3 x 5 x 8,681 = 66,670,080

This can also be written as 29 x 31 x 51 x 8,6811 = 66,670,080

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


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