Primeval primes: primes in A072857.

Terms

a(0) =2a(1) =13a(2) =37a(3) =107a(4) =113a(5) =137a(6) =1013a(7) =1237a(8) =1367a(9) =10079a(10) =10139a(11) =12379a(12) =13679a(13) =100279a(14) =100379a(15) =123479a(16) =1001237a(17) =1002347a(18) =1003679a(19) =1012379