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A104915 Primes p such that the string 987654321p is prime, or primes in A104914. 7
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
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
KEYWORD
nonn,base
AUTHOR
Zak Seidov, Mar 29 2005
STATUS
approved

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Last modified June 23 03:01 EDT 2024. Contains 373629 sequences. (Running on oeis4.)