Q: What are the prime factors of the number 39,140,288?

 A: 2, 11, 53, 1049

Why are those the prime factors of the number 39,140,288?

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 39,140,288

39,140,288
Factor Arrows
219,570,144
Factor Arrows
29,785,072
Factor Arrows
24,892,536
Factor Arrows
22,446,268
Factor Arrows
21,223,134
Factor Arrows
2611,567
Factor Arrows
1155,597
Factor Arrows
531,049

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, 11, 53, 1049

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 11 x 53 x 1,049 = 39,140,288

This can also be written as 26 x 111 x 531 x 1,0491 = 39,140,288

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


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