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A179335 a(n) is the smallest prime which appears as a substring of the decimal representation of prime(n). 4
2, 3, 5, 7, 11, 3, 7, 19, 2, 2, 3, 3, 41, 3, 7, 3, 5, 61, 7, 7, 3, 7, 3, 89, 7, 101, 3, 7, 109, 3, 2, 3, 3, 3, 149, 5, 5, 3, 7, 3, 7, 181, 19, 3, 7, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 401, 409, 19, 2, 3, 3, 3, 3, 449, 5, 61, 3, 7, 7, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) < 10 iff prime(n) is in A179336;

a(n) = prime(n) iff prime(n) is in A033274. [Corrected by M. F. Hasler, Aug 27 2012]

LINKS

R. Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(PARI) A179335(n)={my(p=prime(n), m=0, M); for(d=1, n, M=10^d; n=p; until(n<=M || !n\=10, isprime(n%M) & (!m || m>n%M) & m=n%M); m & return(m))} \\ - M. F. Hasler, Aug 27 2012

CROSSREFS

Cf. A000040, A070024, A019546, A092629, A104250, A019546, A034844, A179336, A193238.

Sequence in context: A194262 A039710 A087173 * A097858 A084408 A257347

Adjacent sequences:  A179332 A179333 A179334 * A179336 A179337 A179338

KEYWORD

base,nonn

AUTHOR

Reinhard Zumkeller, Jul 11 2010

STATUS

approved

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Last modified November 22 15:27 EST 2017. Contains 295089 sequences.