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Sum of two powers (Posted on 2004-08-12) Difficulty: 4 of 5
If n is an integer, show that n4 + 4n is never a prime for n>1.

See The Solution Submitted by Federico Kereki    
Rating: 4.2500 (4 votes)

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  Subject Author Date
SolutionComplete solutionDanish Ahmed Khan2012-10-24 14:42:01
SolutionSolutionK Sengupta2007-05-16 11:13:54
re: Complete answerSilverKnight2004-08-12 16:25:19
SolutionComplete answerBon2004-08-12 15:31:37
re: a startBon2004-08-12 14:51:04
Some ThoughtsIncomplete answerBon2004-08-12 14:46:53
Some Thoughtsa startCharlie2004-08-12 13:52:16
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