Q: What are the prime factors of the number 201,401,025?

 A: 3, 5, 7, 7829

Why are those the prime factors of the number 201,401,025?

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 201,401,025

201,401,025
Factor Arrows
367,133,675
Factor Arrows
513,426,735
Factor Arrows
52,685,347
Factor Arrows
7383,621
Factor Arrows
754,803
Factor Arrows
77,829

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, 7829

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 7 x 7 x 7 x 7,829 = 201,401,025

This can also be written as 31 x 52 x 73 x 7,8291 = 201,401,025

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


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