Q: What are the prime factors of the number 5,125,440?

 A: 2, 3, 5, 19, 281

Why are those the prime factors of the number 5,125,440?

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 5,125,440

5,125,440
Factor Arrows
22,562,720
Factor Arrows
21,281,360
Factor Arrows
2640,680
Factor Arrows
2320,340
Factor Arrows
2160,170
Factor Arrows
280,085
Factor Arrows
326,695
Factor Arrows
55,339
Factor Arrows
19281

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, 19, 281

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 19 x 281 = 5,125,440

This can also be written as 26 x 31 x 51 x 191 x 2811 = 5,125,440

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


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