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Prove SG's theorem (Posted on 2016-07-12) Difficulty: 2 of 5
Prove that a4+4 is never prime for any a bigger than 1.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Solution and related resultJer2016-07-13 10:20:51
SolutionFactoring SolutionBrian Smith2016-07-12 10:59:44
Some ThoughtsNot too hard.broll2016-07-12 10:33:01
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