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 A106100 Primes with maximal digit = 2. 8
 2, 211, 1021, 1201, 2011, 2111, 2221, 10211, 12011, 12101, 12211, 20011, 20021, 20101, 20201, 21001, 21011, 21101, 21121, 21211, 21221, 22111, 101021, 101221, 102001, 102101, 102121, 110221, 111121, 111211, 112111, 112121, 120011, 120121 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A036953. Prime numbers p such that A209928(p) = 2. Complement of A221698 with respect to A221697. [Jaroslav Krizek, Jan 22 2013] LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE N:= 6: # to get all terms of up to N digits M2:= {1}; M1:= {1}: for d from 1 to N-1 do M2:= map(t -> (t, t+10^d, t+2*10^d), M2); M1:= map(t -> (t, t+10^d), M1); od: sort(convert({2} union select(isprime, M2 minus M1), list)); # Robert Israel, Jun 19 2016 MATHEMATICA Select[Prime[Range[10000]], Max[IntegerDigits[ # ]]==2&] PROG (PARI) isok(p) = isprime(p) && (vecmax(digits(p)) == 2); \\ Michel Marcus, Jan 02 2019 CROSSREFS Cf. A106093, A106094, A106095, A106096, A106097, A106098, A106099. Sequence in context: A050445 A167833 A167838 * A167839 A107612 A068814 Adjacent sequences: A106097 A106098 A106099 * A106101 A106102 A106103 KEYWORD nonn,base AUTHOR Zak Seidov, May 07 2005 EXTENSIONS More terms from Rick L. Shepherd, May 22 2005 STATUS approved

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Last modified June 14 13:49 EDT 2024. Contains 373400 sequences. (Running on oeis4.)