Q: What are the prime factors of the number 67,783,680?

 A: 2, 3, 5, 1471

Why are those the prime factors of the number 67,783,680?

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 67,783,680

67,783,680
Factor Arrows
233,891,840
Factor Arrows
216,945,920
Factor Arrows
28,472,960
Factor Arrows
24,236,480
Factor Arrows
22,118,240
Factor Arrows
21,059,120
Factor Arrows
2529,560
Factor Arrows
2264,780
Factor Arrows
2132,390
Factor Arrows
266,195
Factor Arrows
322,065
Factor Arrows
37,355
Factor Arrows
51,471

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, 1471

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 2 x 3 x 3 x 5 x 1,471 = 67,783,680

This can also be written as 210 x 32 x 51 x 1,4711 = 67,783,680

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


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