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An exponent and prime problem (Posted on 2007-01-06) Difficulty: 2 of 5
Given that n is a positive prime number. Determine analytically all possible n such that 2n + n2 is a prime number.

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
I liked it!David Johnson2007-01-15 00:52:54
unique solution?Dennis2007-01-06 15:58:03
re(2): needs a second attemptelementofsurprize2007-01-06 14:56:21
re: needs a second attemptK Sengupta2007-01-06 14:52:11
re: needs a second attempt (correction)elementofsurprize2007-01-06 14:51:48
Some Thoughtsneeds a second attemptelementofsurprize2007-01-06 14:42:54
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