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 A045713 Primes with first digit 7. 21
 7, 71, 73, 79, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, 7109, 7121, 7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229, 7237, 7243, 7247, 7253, 7283 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..5000 MATHEMATICA Select[ Table[ Prime[ n ], {n, 1000} ], First[ IntegerDigits[ # ]]==7& ] PROG (MAGMA) [p: p in PrimesUpTo(7300) | Intseq(p)[#Intseq(p)] eq 7]; // Vincenzo Librandi, Aug 08 2014 CROSSREFS Cf. A000040. For primes with initial digit d (1 <= d <= 9) see A045707, A045708, A045709, A045710, A045711, A045712, A045713, A045714, A045715; A073517, A073516, A073515, A073514, A073513, A073512, A073511, A073510, A073509 Column k=7 of A262369. Sequence in context: A090647 A200929 A111462 * A090155 A326740 A107163 Adjacent sequences:  A045710 A045711 A045712 * A045714 A045715 A045716 KEYWORD nonn,base AUTHOR EXTENSIONS More terms from Erich Friedman. Corrected by Jud McCranie, Jan 03 2001 a(13)=757 added from Vincenzo Librandi, Aug 08 2014 STATUS approved

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Last modified February 24 00:19 EST 2020. Contains 332195 sequences. (Running on oeis4.)