Q: What are the prime factors of the number 7,622,272?

 A: 2, 7, 47, 181

Why are those the prime factors of the number 7,622,272?

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 7,622,272

7,622,272
Factor Arrows
23,811,136
Factor Arrows
21,905,568
Factor Arrows
2952,784
Factor Arrows
2476,392
Factor Arrows
2238,196
Factor Arrows
2119,098
Factor Arrows
259,549
Factor Arrows
78,507
Factor Arrows
47181

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, 7, 47, 181

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 7 x 47 x 181 = 7,622,272

This can also be written as 27 x 71 x 471 x 1811 = 7,622,272

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


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