Q: What are the prime factors of the number 331,304,040?

 A: 2, 3, 5, 306763

Why are those the prime factors of the number 331,304,040?

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 331,304,040

331,304,040
Factor Arrows
2165,652,020
Factor Arrows
282,826,010
Factor Arrows
241,413,005
Factor Arrows
313,804,335
Factor Arrows
34,601,445
Factor Arrows
31,533,815
Factor Arrows
5306,763

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, 306763

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 5 x 306,763 = 331,304,040

This can also be written as 23 x 33 x 51 x 306,7631 = 331,304,040

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


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