A155070 Primes with nonprime largest digit.

11, 19, 29, 41, 43, 59, 61, 79, 83, 89, 97, 101, 109, 139, 149, 163, 179, 181, 191, 193, 197, 199, 229, 239, 241, 263, 269, 281, 283, 293, 349, 359, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 461, 463, 479, 487, 491, 499, 509, 563, 569

Offset

1,1

Comments

Nonprime digit = 0, 1, 4, 6, 8 and 9.

Zero cannot be the largest digit of any prime number. - Harvey P. Dale, Jul 14 2014

Links

Table of n, a(n) for n=1..54.

Example

11(1=1=nonprime), 19(1<9=nonprime), 29(2<9=nonprime), 41(nonprime=4>1), etc.

Mathematica

Select[Prime[Range[200]], !PrimeQ[Max[IntegerDigits[#]]]&] (* Harvey P. Dale, Jul 14 2014 *)

Crossrefs

Cf. A000040, A141468.

Sequence in context: A277123 A034099 A034109 * A080821 A175275 A094517

Adjacent sequences: A155067 A155068 A155069 * A155071 A155072 A155073

Keyword

nonn,base

Author

Juri-Stepan Gerasimov, Jan 19 2009

Extensions

Corrected (239 and 443 inserted) by R. J. Mathar, May 05 2010

Status

approved