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A155555 Primes p such that (number of prime digits of p) < (number of prime digits of prime(p)). 2
11, 19, 31, 41, 59, 61, 67, 71, 101, 103, 107, 109, 131, 137, 139, 149, 151, 181, 191, 199, 211, 241, 269, 281, 307, 311, 331, 349, 367, 389, 401, 409, 419, 439, 449, 457, 461, 463, 467, 479, 491, 499, 503, 509, 521, 569, 587, 599, 601, 613, 619, 641, 643 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Prime digits are 2, 3, 5, 7.

LINKS

John Cerkan, Table of n, a(n) for n = 1..10000

PROG

(PARI) dp(n)=d=digits(n); c=0; for(i=1, #d, if(isprime(d[i]), c+=1)); c

forprime(p=1, 500, if(dp(p)<dp(prime(p)), print1(p, ", "))) \\ Derek Orr, Feb 28 2017

CROSSREFS

Cf. A000040, A109066, A155552.

Sequence in context: A196669 A322548 A049719 * A152091 A272550 A122869

Adjacent sequences:  A155552 A155553 A155554 * A155556 A155557 A155558

KEYWORD

nonn,base,less

AUTHOR

Juri-Stepan Gerasimov, Jan 24 2009

EXTENSIONS

Corrected (87 removed) by R. J. Mathar, May 15 2010

STATUS

approved

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Last modified September 18 01:54 EDT 2021. Contains 347504 sequences. (Running on oeis4.)