GRE - Prime Factorization

This video talks about the application of the prime factorization of a number.

Problem: What is the greatest integral value of k such that 4^k is a factor of 280^9?

Approach: It is better to work the other way round. Rather than finding the value of k, we prime factorize 280. In fact, finding all the prime factors of 280 is not required. We just need the power of 2, which appears in its factorization. Watch this video to see this approach applied to solve this problem.

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Keywords: GRE, GRE exam, GRE examples, prime numbers, prime factors
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