Q: What are the prime factors of the number 245,125,152?

 A: 2, 3, 409, 2081

Why are those the prime factors of the number 245,125,152?

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 245,125,152

245,125,152
Factor Arrows
2122,562,576
Factor Arrows
261,281,288
Factor Arrows
230,640,644
Factor Arrows
215,320,322
Factor Arrows
27,660,161
Factor Arrows
32,553,387
Factor Arrows
3851,129
Factor Arrows
4092,081

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, 409, 2081

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 3 x 409 x 2,081 = 245,125,152

This can also be written as 25 x 32 x 4091 x 2,0811 = 245,125,152

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


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