Q: What are the prime factors of the number 30,755,520?

 A: 2, 3, 5, 59, 181

Why are those the prime factors of the number 30,755,520?

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 30,755,520

30,755,520
Factor Arrows
215,377,760
Factor Arrows
27,688,880
Factor Arrows
23,844,440
Factor Arrows
21,922,220
Factor Arrows
2961,110
Factor Arrows
2480,555
Factor Arrows
3160,185
Factor Arrows
353,395
Factor Arrows
510,679
Factor Arrows
59181

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, 59, 181

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 59 x 181 = 30,755,520

This can also be written as 26 x 32 x 51 x 591 x 1811 = 30,755,520

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


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