Q: What are the prime factors of the number 144,391,065?

 A: 3, 5, 7, 13, 79, 103

Why are those the prime factors of the number 144,391,065?

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 144,391,065

144,391,065
Factor Arrows
348,130,355
Factor Arrows
59,626,071
Factor Arrows
71,375,153
Factor Arrows
13105,781
Factor Arrows
138,137
Factor Arrows
79103

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, 7, 13, 79, 103

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 13 x 13 x 79 x 103 = 144,391,065

This can also be written as 31 x 51 x 71 x 132 x 791 x 1031 = 144,391,065

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


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