Q: What are the prime factors of the number 305,413,152?

 A: 2, 3, 11, 29, 9973

Why are those the prime factors of the number 305,413,152?

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 305,413,152

305,413,152
Factor Arrows
2152,706,576
Factor Arrows
276,353,288
Factor Arrows
238,176,644
Factor Arrows
219,088,322
Factor Arrows
29,544,161
Factor Arrows
33,181,387
Factor Arrows
11289,217
Factor Arrows
299,973

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, 29, 9973

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 11 x 29 x 9,973 = 305,413,152

This can also be written as 25 x 31 x 111 x 291 x 9,9731 = 305,413,152

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


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