Q: What are the prime factors of the number 51,103,440?

 A: 2, 3, 5, 59, 401

Why are those the prime factors of the number 51,103,440?

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 51,103,440

51,103,440
Factor Arrows
225,551,720
Factor Arrows
212,775,860
Factor Arrows
26,387,930
Factor Arrows
23,193,965
Factor Arrows
31,064,655
Factor Arrows
3354,885
Factor Arrows
3118,295
Factor Arrows
523,659
Factor Arrows
59401

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, 3, 5, 59, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 59 x 401 = 51,103,440

This can also be written as 24 x 33 x 51 x 591 x 4011 = 51,103,440

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


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