Q: What are the prime factors of the number 11,225,440?

 A: 2, 5, 17, 4127

Why are those the prime factors of the number 11,225,440?

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 11,225,440

11,225,440
Factor Arrows
25,612,720
Factor Arrows
22,806,360
Factor Arrows
21,403,180
Factor Arrows
2701,590
Factor Arrows
2350,795
Factor Arrows
570,159
Factor Arrows
174,127

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, 5, 17, 4127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 17 x 4,127 = 11,225,440

This can also be written as 25 x 51 x 171 x 4,1271 = 11,225,440

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


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