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 A144714 Left-truncatable primes that contain one or more zero digits. 1
 103, 107, 307, 503, 607, 907, 1013, 1097, 1103, 1307, 1607, 1907, 2003, 2017, 2053, 2083, 2503, 3023, 3037, 3067, 3083, 3307, 3607, 3907, 4003, 4007, 4013, 4073, 5003, 5023, 5107, 5503, 6007, 6037, 6043, 6047, 6053, 6067, 6073, 6607, 6907, 7013, 7043 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS These are the terms in sequence A033664 that are not in A024785. This sequence is infinitely long. LINKS H. J. Smith, Table of n, a(n) for n = 1..10000 I. O. Angell and H. J. Godwin, On Truncatable Primes, Math. Comput. 31, 265-267, 1977. H. J. Smith, Link to programs to generate truncatable primes. Eric Weisstein's World of Mathematics, Truncatable Prime PROG (PARI) zeroin(z)={until(z==0, q=z\10; r=z-10*q; if(r==0, return(1)); z=q; ); return(0); } {fileO="b144714.txt"; v=vector(15000); v[1]=2; v[2]=3; v[3]=5; v[4]=7; j=4; m=0; p10=1; until(0, p10*=10; j0=j; for(k=1, 9, k10=k*p10; for(i=1, j0, z=k10+v[i]; if(isprime(z), j++; v[j]=z; if(zeroin(z), m++; write(fileO, m, " ", z); if(m==10000, break(3)); ))))); } CROSSREFS Cf. A020994, A024770, A024785, A033664, A132394. Sequence in context: A165294 A046076 A178527 * A140817 A274518 A066131 Adjacent sequences:  A144711 A144712 A144713 * A144715 A144716 A144717 KEYWORD nonn,base AUTHOR Harry J. Smith, Oct 08 2008 STATUS approved

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Last modified March 21 04:59 EDT 2019. Contains 321364 sequences. (Running on oeis4.)