A104915 Primes p such that the string 987654321p is prime, or primes in A104914.

7, 37, 67, 109, 113, 193, 197, 223, 317, 331, 347, 397, 449, 491, 569, 571, 587, 673, 743, 757, 769, 883, 919, 991, 1019, 1021, 1033, 1091, 1277, 1291, 1321, 1531, 1567, 1583, 1663, 1709, 1811, 1901, 1979, 2069, 2089, 2111, 2153, 2267, 2269, 2311, 2339

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Prime[Range[400]], PrimeQ[987654321*10^IntegerLength[#]+#]&] (* Harvey P. Dale, Jun 06 2024 *)

Crossrefs

Cf. A104914.

Sequence in context: A132231 A289353 A221982 * A089376 A337423 A031395

Adjacent sequences: A104912 A104913 A104914 * A104916 A104917 A104918

Keyword

nonn,base

Author

Zak Seidov, Mar 29 2005

Status

approved