Q: What are the prime factors of the number 144,145,512?

 A: 2, 3, 7, 113, 2531

Why are those the prime factors of the number 144,145,512?

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 144,145,512

144,145,512
Factor Arrows
272,072,756
Factor Arrows
236,036,378
Factor Arrows
218,018,189
Factor Arrows
36,006,063
Factor Arrows
32,002,021
Factor Arrows
7286,003
Factor Arrows
1132,531

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, 113, 2531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 113 x 2,531 = 144,145,512

This can also be written as 23 x 32 x 71 x 1131 x 2,5311 = 144,145,512

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


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