This number is a prime.
73 multiplied by the 17th Pell number is 82978297, which is 8297 concatenated with itself. Note that 73, 17, and 8297 are prime. [Axoy]
73 multiplied by the 17th Pell number is 82978297, which is 8297 concatenated with itself. Note that 73, 17, and 8297 are prime. [Axoy]