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 A048518 Primes containing only two distinct digits whose sum of digits is 28, the second perfect number. 2
 1999, 9199, 338383, 383833, 1181881, 1881181, 1881811, 2222929, 2922229, 8118181, 8188111, 8881111, 9222229, 15551551, 15555151, 15555511, 16166611, 16616161, 33333373, 33733333, 34434343, 44334343, 44343433, 51155551, 51515551, 55155151, 55155511, 55515151 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Calculated by Robert T. McQuaid (robert.mcquaid(AT)headwaters.com). LINKS Alois P. Heinz, Table of n, a(n) for n = 1..21755 (first 200 terms from Sean A. Irvine) C. Rivera, Source from Carlos Rivera's Puzzle Site. MATHEMATICA Select[Prime[Range[3100000]], Count[DigitCount[#], 0]==8&&Total[ IntegerDigits[ #]]==28&] (* Harvey P. Dale, Jun 11 2016 *) CROSSREFS Cf. A000396, A030291, A048517. Sequence in context: A230202 A037029 A048517 * A043416 A125680 A162238 Adjacent sequences: A048515 A048516 A048517 * A048519 A048520 A048521 KEYWORD nonn,base AUTHOR Patrick De Geest, May 15 1999 EXTENSIONS More terms from Naohiro Nomoto, Jul 28 2001 Offset corrected by Sean A. Irvine, Jun 20 2021 STATUS approved

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Last modified February 23 08:04 EST 2024. Contains 370269 sequences. (Running on oeis4.)