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Re: What is the best prime element of 4^17 - 2^28?<#permalink>
24 Nov 2018, 14:18
A video clip explanation have the right to be found here:https://www.youtube.com/watch?v=gCL6DmaIqK4The very first step is noting that we want to job-related from a common base, i.e. Instead of 4 and 2, we desire 2^2 and also 2. Now we have (2^2)^17 - 2^28What’s tested are your understanding of exponent rules, factoring, and also prime numbers. Us have2^34 – 2^28, i beg your pardon is2^28(2^6 – 1) , which is2^28(64 – 1), i m sorry is2^28 (63), i m sorry is2^28 (3^2)(7)Prime determinants are 2, 3 and 7. Best prime aspect is 7_________________

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