This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).
Single Curio View: (Seek other curios for this number)A palindromic prime constructed around a central three-digit palindromic prime, namely 151, and extended to the right with the next 975 consecutive primes up to 8039 and to the left extended with the mirror image of this extended concatenation. [Raghuramaiah]
Submitted: 2016-08-24 19:53:44; Last Modified: 2016-08-24 20:06:40.
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