Q: What are the prime factors of the number 551,040?

 A: 2, 3, 5, 7, 41

Why are those the prime factors of the number 551,040?

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 551,040

551,040
Factor Arrows
2275,520
Factor Arrows
2137,760
Factor Arrows
268,880
Factor Arrows
234,440
Factor Arrows
217,220
Factor Arrows
28,610
Factor Arrows
24,305
Factor Arrows
31,435
Factor Arrows
5287
Factor Arrows
741

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, 7, 41

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 3 x 5 x 7 x 41 = 551,040

This can also be written as 27 x 31 x 51 x 71 x 411 = 551,040

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


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