Q: What are the prime factors of the number 314,423,040?

 A: 2, 3, 5, 37, 2213

Why are those the prime factors of the number 314,423,040?

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 314,423,040

314,423,040
Factor Arrows
2157,211,520
Factor Arrows
278,605,760
Factor Arrows
239,302,880
Factor Arrows
219,651,440
Factor Arrows
29,825,720
Factor Arrows
24,912,860
Factor Arrows
22,456,430
Factor Arrows
21,228,215
Factor Arrows
3409,405
Factor Arrows
581,881
Factor Arrows
372,213

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, 37, 2213

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 2 x 3 x 5 x 37 x 2,213 = 314,423,040

This can also be written as 28 x 31 x 51 x 371 x 2,2131 = 314,423,040

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


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