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 A106116 Primes with smallest digit > 1. 7
 2, 3, 5, 7, 23, 29, 37, 43, 47, 53, 59, 67, 73, 79, 83, 89, 97, 223, 227, 229, 233, 239, 257, 263, 269, 277, 283, 293, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 433, 439, 443, 449, 457, 463, 467, 479, 487, 499, 523, 547, 557, 563, 569, 577, 587, 593 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A038603 - Jonathan Vos Post, Feb 10 2010 LINKS Indranil Ghosh, Table of n, a(n) for n = 1..50000 Chris C. Caldwell, Yarborough prime James Maynard, Primes with restricted digits, arXiv:1604.01041 [math.NT], 2016. James Maynard and Brady Haran, Primes without a 7, Numberphile video (2019) FORMULA a(n) >> n^k with k = log 10/log 8 = 1.107.... - Charles R Greathouse IV, Jan 02 2013 MATHEMATICA Select[Prime[Range[100]], Min[IntegerDigits[ # ]]>1&] PROG (PARI) is(p)=vecsort(digits(p), , 8)[1]>1 && isprime(p) \\ Charles R Greathouse IV, Jan 02 2013 CROSSREFS Cf. A000040, A038603, A106745. Sequence in context: A320585 A024770 A038603 * A091727 A240920 A030144 Adjacent sequences:  A106113 A106114 A106115 * A106117 A106118 A106119 KEYWORD nonn,base AUTHOR Zak Seidov, May 07 2005 EXTENSIONS Terms > 523 added by Jonathan Vos Post, Feb 10 2010 STATUS approved

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Last modified February 17 18:14 EST 2020. Contains 332005 sequences. (Running on oeis4.)