Q: What are the prime factors of the number 30,763,200?

 A: 2, 3, 5, 13, 17, 29

Why are those the prime factors of the number 30,763,200?

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 30,763,200

30,763,200
Factor Arrows
215,381,600
Factor Arrows
27,690,800
Factor Arrows
23,845,400
Factor Arrows
21,922,700
Factor Arrows
2961,350
Factor Arrows
2480,675
Factor Arrows
3160,225
Factor Arrows
532,045
Factor Arrows
56,409
Factor Arrows
13493
Factor Arrows
1729

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, 13, 17, 29

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 5 x 5 x 13 x 17 x 29 = 30,763,200

This can also be written as 26 x 31 x 52 x 131 x 171 x 291 = 30,763,200

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


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