Q: What are the prime factors of the number 65,045,408?

 A: 2, 37, 137, 401

Why are those the prime factors of the number 65,045,408?

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 65,045,408

65,045,408
Factor Arrows
232,522,704
Factor Arrows
216,261,352
Factor Arrows
28,130,676
Factor Arrows
24,065,338
Factor Arrows
22,032,669
Factor Arrows
3754,937
Factor Arrows
137401

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, 37, 137, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 37 x 137 x 401 = 65,045,408

This can also be written as 25 x 371 x 1371 x 4011 = 65,045,408

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


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