Q: What are the prime factors of the number 45,515,520?

 A: 2, 3, 5, 439

Why are those the prime factors of the number 45,515,520?

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 45,515,520

45,515,520
Factor Arrows
222,757,760
Factor Arrows
211,378,880
Factor Arrows
25,689,440
Factor Arrows
22,844,720
Factor Arrows
21,422,360
Factor Arrows
2711,180
Factor Arrows
2355,590
Factor Arrows
2177,795
Factor Arrows
359,265
Factor Arrows
319,755
Factor Arrows
36,585
Factor Arrows
32,195
Factor Arrows
5439

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, 439

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 2 x 2 x 3 x 3 x 3 x 3 x 5 x 439 = 45,515,520

This can also be written as 28 x 34 x 51 x 4391 = 45,515,520

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


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