Q: What are the prime factors of the number 331,010,120?

 A: 2, 5, 7, 151, 7829

Why are those the prime factors of the number 331,010,120?

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 331,010,120

331,010,120
Factor Arrows
2165,505,060
Factor Arrows
282,752,530
Factor Arrows
241,376,265
Factor Arrows
58,275,253
Factor Arrows
71,182,179
Factor Arrows
1517,829

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, 151, 7829

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 151 x 7,829 = 331,010,120

This can also be written as 23 x 51 x 71 x 1511 x 7,8291 = 331,010,120

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


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