Q: What are the prime factors of the number 61,222,144?

 A: 2, 379, 631

Why are those the prime factors of the number 61,222,144?

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 61,222,144

61,222,144
Factor Arrows
230,611,072
Factor Arrows
215,305,536
Factor Arrows
27,652,768
Factor Arrows
23,826,384
Factor Arrows
21,913,192
Factor Arrows
2956,596
Factor Arrows
2478,298
Factor Arrows
2239,149
Factor Arrows
379631

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, 379, 631

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 379 x 631 = 61,222,144

This can also be written as 28 x 3791 x 6311 = 61,222,144

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


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