Q: What are the prime factors of the number 212,356,738?

 A: 2, 11, 61, 229, 691

Why are those the prime factors of the number 212,356,738?

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 212,356,738

212,356,738
Factor Arrows
2106,178,369
Factor Arrows
119,652,579
Factor Arrows
61158,239
Factor Arrows
229691

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, 11, 61, 229, 691

We can check our work by multiplying all of the prime factors together: 2 x 11 x 61 x 229 x 691 = 212,356,738

This can also be written as 21 x 111 x 611 x 2291 x 6911 = 212,356,738

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


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