Q: What are the prime factors of the number 307,236,864?

 A: 2, 3, 11, 2273

Why are those the prime factors of the number 307,236,864?

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 307,236,864

307,236,864
Factor Arrows
2153,618,432
Factor Arrows
276,809,216
Factor Arrows
238,404,608
Factor Arrows
219,202,304
Factor Arrows
29,601,152
Factor Arrows
24,800,576
Factor Arrows
22,400,288
Factor Arrows
21,200,144
Factor Arrows
2600,072
Factor Arrows
2300,036
Factor Arrows
2150,018
Factor Arrows
275,009
Factor Arrows
325,003
Factor Arrows
112,273

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, 11, 2273

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 2 x 2 x 2 x 2 x 3 x 11 x 2,273 = 307,236,864

This can also be written as 212 x 31 x 111 x 2,2731 = 307,236,864

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


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