Q: What are the prime factors of the number 55,111,155?

 A: 3, 5, 11, 101, 3307

Why are those the prime factors of the number 55,111,155?

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 55,111,155

55,111,155
Factor Arrows
318,370,385
Factor Arrows
53,674,077
Factor Arrows
11334,007
Factor Arrows
1013,307

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, 11, 101, 3307

We can check our work by multiplying all of the prime factors together: 3 x 5 x 11 x 101 x 3,307 = 55,111,155

This can also be written as 31 x 51 x 111 x 1011 x 3,3071 = 55,111,155

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


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