Q: What are the prime factors of the number 305,045,356?

 A: 2, 7, 11, 179, 503

Why are those the prime factors of the number 305,045,356?

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 305,045,356

305,045,356
Factor Arrows
2152,522,678
Factor Arrows
276,261,339
Factor Arrows
710,894,477
Factor Arrows
11990,407
Factor Arrows
1190,037
Factor Arrows
179503

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, 7, 11, 179, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 11 x 11 x 179 x 503 = 305,045,356

This can also be written as 22 x 71 x 112 x 1791 x 5031 = 305,045,356

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


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