perplexus.info :: Numbers : Palindromic and prime

Palindromic and prime (Posted on 2013-12-30)

For what values of x the expression 2x^2+2x+1 is palindromic and prime?

x=1 is the 1st answer.

Please provide three others.

See The Solution Submitted by Ady TZIDON

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	Subject	Author	Date
	computer solution	Charlie	2013-12-30 17:45:16

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