8297
This number is a prime.
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73 multiplied by the 17th Pell number is 82978297, which is 8297 concatenated with itself. Note that 73, 17, and 8297 are prime. [Axoy]
Submitted: 2004-08-01 15:42:51; Last Modified: 2008-01-30 17:28:00.
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