Q: What are the prime factors of the number 305,846,772?

 A: 2, 3, 7, 11, 191, 1733

Why are those the prime factors of the number 305,846,772?

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 305,846,772

305,846,772
Factor Arrows
2152,923,386
Factor Arrows
276,461,693
Factor Arrows
325,487,231
Factor Arrows
73,641,033
Factor Arrows
11331,003
Factor Arrows
1911,733

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, 7, 11, 191, 1733

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 11 x 191 x 1,733 = 305,846,772

This can also be written as 22 x 31 x 71 x 111 x 1911 x 1,7331 = 305,846,772

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


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