Q: What are the prime factors of the number 11,140,470?

 A: 2, 3, 5, 11, 31

Why are those the prime factors of the number 11,140,470?

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 11,140,470

11,140,470
Factor Arrows
25,570,235
Factor Arrows
31,856,745
Factor Arrows
3618,915
Factor Arrows
3206,305
Factor Arrows
541,261
Factor Arrows
113,751
Factor Arrows
11341
Factor Arrows
1131

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, 11, 31

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 11 x 11 x 11 x 31 = 11,140,470

This can also be written as 21 x 33 x 51 x 113 x 311 = 11,140,470

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


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