Q: What are the prime factors of the number 55,325,420?

 A: 2, 5, 103, 107, 251

Why are those the prime factors of the number 55,325,420?

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 55,325,420

55,325,420
Factor Arrows
227,662,710
Factor Arrows
213,831,355
Factor Arrows
52,766,271
Factor Arrows
10326,857
Factor Arrows
107251

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, 5, 103, 107, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 103 x 107 x 251 = 55,325,420

This can also be written as 22 x 51 x 1031 x 1071 x 2511 = 55,325,420

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


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