Q: What are the prime factors of the number 36,315,136?

 A: 2, 11, 13, 31

Why are those the prime factors of the number 36,315,136?

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 36,315,136

36,315,136
Factor Arrows
218,157,568
Factor Arrows
29,078,784
Factor Arrows
24,539,392
Factor Arrows
22,269,696
Factor Arrows
21,134,848
Factor Arrows
2567,424
Factor Arrows
2283,712
Factor Arrows
2141,856
Factor Arrows
270,928
Factor Arrows
235,464
Factor Arrows
217,732
Factor Arrows
28,866
Factor Arrows
24,433
Factor Arrows
11403
Factor Arrows
1331

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, 11, 13, 31

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 2 x 11 x 13 x 31 = 36,315,136

This can also be written as 213 x 111 x 131 x 311 = 36,315,136

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


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