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Re: Replace, test question

• To: mathgroup at smc.vnet.net
• Subject: [mg120355] Re: Replace, test question
• From: David Skulsky <edskulsky at gmail.com>
• Date: Tue, 19 Jul 2011 07:00:46 -0400 (EDT)
• Reply-to: comp.soft-sys.math.mathematica at googlegroups.com

I think your conditional needs to be a function of x.  Try:

{58, 61, 15, 66, 10, 2, 24, 81, 45, 84} /. x_ /; PrimeQ[x] -> P

David