Q: What are the prime factors of the number 65,140,404?

 A: 2, 3, 7, 139, 797

Why are those the prime factors of the number 65,140,404?

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 65,140,404

65,140,404
Factor Arrows
232,570,202
Factor Arrows
216,285,101
Factor Arrows
35,428,367
Factor Arrows
7775,481
Factor Arrows
7110,783
Factor Arrows
139797

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, 7, 139, 797

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 139 x 797 = 65,140,404

This can also be written as 22 x 31 x 72 x 1391 x 7971 = 65,140,404

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


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