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 A156083 In this sequence each prime ends a prime century. Place a 0 between the final two digits, and raise the 100s digit by 1, to form the first prime of the next century. 1
 8783, 22787, 23899, 26893, 37897, 54679, 64891, 65789, 67891, 70891, 71899, 73897, 76781, 89899, 91781, 98899, 108677, 110899, 115891, 124897, 130787, 131899, 133781, 139891, 144671, 149899, 152899, 164789, 187897, 190891, 206783, 207679 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS These appear to occur in a fairly random fashion much like prime quadruplets. The 10s digit must be greater by 1 than the 100s digit. - Tanya Khovanova, Jul 10 2021 LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 EXAMPLE 8783 becomes 8803, note that 83 becomes 803. PROG (PARI) is(p)=my(q=nextprime(p+1), a=p%1000\100); isprime(p) && a==p%100\10-1 && q-p==90-10*a \\ Charles R Greathouse IV, Feb 07 2013 CROSSREFS Sequence in context: A255758 A255751 A254840 * A249956 A031791 A179128 Adjacent sequences: A156080 A156081 A156082 * A156084 A156085 A156086 KEYWORD nonn,base AUTHOR Ki Punches, Feb 03 2009, Feb 08 2009 EXTENSIONS Corrected and extended by Ki Punches, Feb 08 2009 a(22) and a(32) corrected by Charles R Greathouse IV, Feb 07 2013 STATUS approved

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Last modified September 21 21:03 EDT 2023. Contains 365503 sequences. (Running on oeis4.)