Q: What are the prime factors of the number 131,303,040?

 A: 2, 3, 5, 11, 6217

Why are those the prime factors of the number 131,303,040?

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 131,303,040

131,303,040
Factor Arrows
265,651,520
Factor Arrows
232,825,760
Factor Arrows
216,412,880
Factor Arrows
28,206,440
Factor Arrows
24,103,220
Factor Arrows
22,051,610
Factor Arrows
21,025,805
Factor Arrows
3341,935
Factor Arrows
568,387
Factor Arrows
116,217

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, 5, 11, 6217

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 3 x 5 x 11 x 6,217 = 131,303,040

This can also be written as 27 x 31 x 51 x 111 x 6,2171 = 131,303,040

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


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