Q: What are the prime factors of the number 49,177,472?

 A: 2, 19, 73, 277

Why are those the prime factors of the number 49,177,472?

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 49,177,472

49,177,472
Factor Arrows
224,588,736
Factor Arrows
212,294,368
Factor Arrows
26,147,184
Factor Arrows
23,073,592
Factor Arrows
21,536,796
Factor Arrows
2768,398
Factor Arrows
2384,199
Factor Arrows
1920,221
Factor Arrows
73277

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, 19, 73, 277

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 19 x 73 x 277 = 49,177,472

This can also be written as 27 x 191 x 731 x 2771 = 49,177,472

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


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