Q: What are the prime factors of the number 304,231,040?

 A: 2, 5, 19, 127, 197

Why are those the prime factors of the number 304,231,040?

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 304,231,040

304,231,040
Factor Arrows
2152,115,520
Factor Arrows
276,057,760
Factor Arrows
238,028,880
Factor Arrows
219,014,440
Factor Arrows
29,507,220
Factor Arrows
24,753,610
Factor Arrows
22,376,805
Factor Arrows
5475,361
Factor Arrows
1925,019
Factor Arrows
127197

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, 19, 127, 197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 19 x 127 x 197 = 304,231,040

This can also be written as 27 x 51 x 191 x 1271 x 1971 = 304,231,040

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


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