Q: What are the prime factors of the number 55,370?

 A: 2, 5, 7, 113

Why are those the prime factors of the number 55,370?

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 55,370

55,370
Factor Arrows
227,685
Factor Arrows
55,537
Factor Arrows
7791
Factor Arrows
7113

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, 7, 113

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 113 = 55,370

This can also be written as 21 x 51 x 72 x 1131 = 55,370

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


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