Q: What are the prime factors of the number 305,781,048?

 A: 2, 3, 619, 2287

Why are those the prime factors of the number 305,781,048?

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 305,781,048

305,781,048
Factor Arrows
2152,890,524
Factor Arrows
276,445,262
Factor Arrows
238,222,631
Factor Arrows
312,740,877
Factor Arrows
34,246,959
Factor Arrows
31,415,653
Factor Arrows
6192,287

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, 619, 2287

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 619 x 2,287 = 305,781,048

This can also be written as 23 x 33 x 6191 x 2,2871 = 305,781,048

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


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