Q: What are the prime factors of the number 61,436,655?

 A: 3, 5, 7, 41, 67, 71

Why are those the prime factors of the number 61,436,655?

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 61,436,655

61,436,655
Factor Arrows
320,478,885
Factor Arrows
36,826,295
Factor Arrows
51,365,259
Factor Arrows
7195,037
Factor Arrows
414,757
Factor Arrows
6771

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:

3, 5, 7, 41, 67, 71

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 41 x 67 x 71 = 61,436,655

This can also be written as 32 x 51 x 71 x 411 x 671 x 711 = 61,436,655

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


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