Q: What are the prime factors of the number 145,135,497?

 A: 3, 13, 23, 37, 4373

Why are those the prime factors of the number 145,135,497?

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 145,135,497

145,135,497
Factor Arrows
348,378,499
Factor Arrows
133,721,423
Factor Arrows
23161,801
Factor Arrows
374,373

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, 13, 23, 37, 4373

We can check our work by multiplying all of the prime factors together: 3 x 13 x 23 x 37 x 4,373 = 145,135,497

This can also be written as 31 x 131 x 231 x 371 x 4,3731 = 145,135,497

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


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