Q: What are the prime factors of the number 623,065,365?

 A: 3, 5, 13, 487

Why are those the prime factors of the number 623,065,365?

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 623,065,365

623,065,365
Factor Arrows
3207,688,455
Factor Arrows
369,229,485
Factor Arrows
323,076,495
Factor Arrows
37,692,165
Factor Arrows
32,564,055
Factor Arrows
3854,685
Factor Arrows
3284,895
Factor Arrows
394,965
Factor Arrows
331,655
Factor Arrows
56,331
Factor Arrows
13487

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:

3, 5, 13, 487

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 13 x 487 = 623,065,365

This can also be written as 39 x 51 x 131 x 4871 = 623,065,365

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


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