Q: What are the prime factors of the number 331,211,100?

 A: 2, 3, 5, 11, 167, 601

Why are those the prime factors of the number 331,211,100?

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 331,211,100

331,211,100
Factor Arrows
2165,605,550
Factor Arrows
282,802,775
Factor Arrows
327,600,925
Factor Arrows
55,520,185
Factor Arrows
51,104,037
Factor Arrows
11100,367
Factor Arrows
167601

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, 11, 167, 601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 11 x 167 x 601 = 331,211,100

This can also be written as 22 x 31 x 52 x 111 x 1671 x 6011 = 331,211,100

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


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