Q: What are the prime factors of the number 636,323,040?

 A: 2, 3, 5, 37, 1327

Why are those the prime factors of the number 636,323,040?

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 636,323,040

636,323,040
Factor Arrows
2318,161,520
Factor Arrows
2159,080,760
Factor Arrows
279,540,380
Factor Arrows
239,770,190
Factor Arrows
219,885,095
Factor Arrows
36,628,365
Factor Arrows
32,209,455
Factor Arrows
3736,485
Factor Arrows
3245,495
Factor Arrows
549,099
Factor Arrows
371,327

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, 37, 1327

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 3 x 3 x 5 x 37 x 1,327 = 636,323,040

This can also be written as 25 x 34 x 51 x 371 x 1,3271 = 636,323,040

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


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