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An exponent and prime problem (Posted on 2007-01-06)

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)

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re: needs a second attempt (correction)

| Comment 2 of 6 |

(In reply to needs a second attempt by elementofsurprize)

correction: n should be such odd number that its square ends in either 9 or 5.

Posted by elementofsurprize on 2007-01-06 14:51:48

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