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 A048895 Bemirps: primes that yield a different prime when turned upside down with reversals of both being two more different primes. 17
 1061, 1091, 1601, 1901, 10061, 10091, 16001, 19001, 106861, 109891, 168601, 198901, 1106881, 1109881, 1606081, 1806061, 1809091, 1886011, 1889011, 1909081, 10806881, 10809881, 11061811, 11091811, 11609681, 11698691, 11816011, 11819011, 11906981 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Emirps that yield other emirps when turned upside down. [Lekraj Beedassy, Apr 03 2009] Invertible primes whose reversals are also invertible primes. [Lekraj Beedassy, Apr 04 2009] All terms must begin and end with a one. - T. D. Noe, Apr 21 2014 LINKS Jens Kruse Andersen, Table of n, a(n) for n = 1..10000 (first 468 terms from T. D. Noe) Giovanni Resta, bemirps MATHEMATICA upDown[0] = 0; upDown[1] = 1; upDown[6] = 9; upDown[8] = 8; upDown[9] = 6; fQ[p_] := Module[{revP, upDownP, revUpDownP}, If[Intersection[{2, 3, 4, 5, 7}, Union[IntegerDigits[p]]] != {}, False, revP = FromDigits[Reverse[IntegerDigits[p]]]; upDownP = FromDigits[upDown /@ IntegerDigits[p]]; revUpDownP = FromDigits[Reverse[IntegerDigits[upDownP]]]; p != revP && p != upDownP && p != revUpDownP && PrimeQ[revP] && PrimeQ[upDownP] && PrimeQ[revUpDownP]]]; t = {}; nn = 6; Do[p = 10^n; While[p < 2*10^n, p = NextPrime[p]; If[fQ[p], AppendTo[t, p]]], {n, nn}]; t (* T. D. Noe, Apr 21 2014 *) CROSSREFS Cf. A003684, A006567, A007628, A046732, A048051, A048052, A048053, A048054. Sequence in context: A237797 A237795 A276355 * A020374 A142822 A172384 Adjacent sequences:  A048892 A048893 A048894 * A048896 A048897 A048898 KEYWORD base,nonn,nice AUTHOR EXTENSIONS More terms from David W. Wilson. STATUS approved

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Last modified December 3 10:49 EST 2016. Contains 278699 sequences.