Q: What are the prime factors of the number 305,877,384?

 A: 2, 3, 29, 41, 397

Why are those the prime factors of the number 305,877,384?

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 305,877,384

305,877,384
Factor Arrows
2152,938,692
Factor Arrows
276,469,346
Factor Arrows
238,234,673
Factor Arrows
312,744,891
Factor Arrows
34,248,297
Factor Arrows
31,416,099
Factor Arrows
3472,033
Factor Arrows
2916,277
Factor Arrows
41397

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, 29, 41, 397

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 3 x 29 x 41 x 397 = 305,877,384

This can also be written as 23 x 34 x 291 x 411 x 3971 = 305,877,384

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


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