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 A282973 Primes in A011546. 2
 3, 31, 314159, 314159265359 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Eric Weisstein's World of Mathematics, Pi-Prime EXAMPLE a(5) = A011546(1902) = 314159...066118631 is a prime with 1902-digit. a(6) = A011546(3971) = 314159...411010447. a(7) = A011546(5827) = 314159...690496521. a(8) = A011546(16208) = A005042(5) = 314159....943936307. For n<=17511, there are eight primes in sequence A011546(n). In addition, because of round(Pi*10^47576) = floor(Pi*10^47576), and A011546(47577)(=A005042(6)) is a prime. Thus,  A011546(47577) will appear in here. A011546(613373)(=A005042(8)) as well. But A011546(78073)(=A005042(7)+1) is not prime. MATHEMATICA Do[If[PrimeQ[Round[Pi*10^(n-1)]], Print[Round[Pi*10^(n-1)]]], {n, 17511}] CROSSREFS Cf. A011546, A282974, A000796, A005042. Sequence in context: A276199 A118913 A297480 * A005042 A317482 A136582 Adjacent sequences:  A282970 A282971 A282972 * A282974 A282975 A282976 KEYWORD nonn,base AUTHOR XU Pingya, Feb 25 2017 STATUS approved

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Last modified May 8 13:26 EDT 2021. Contains 343666 sequences. (Running on oeis4.)