Primes that yield another prime on placing a 1 on both sides (as leading and trailing digits).
3, 5, 17, 23, 29, 47, 53, 83, 107, 113, 131, 149, 173, 197, 239, 251, 317, 359, 383
5 seqfan posts
Fri May 18 22:19:53 CEST 2012 [seqfan] Re: A069687 and A185022
Fri May 18 21:59:20 CEST 2012 [seqfan] Re: A069687 and A185022
Fri May 18 20:45:27 CEST 2012 [seqfan] Re: A069687 and A185022
Fri May 18 19:29:20 CEST 2012 [seqfan] Re: A069687 and A185022
Fri May 18 18:35:19 CEST 2012 [seqfan] A069687 and A185022
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
Links to OEIS content are included according to
The OEIS End-User License Agreement
.