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A108845 Palindromic primes in which all internal digits are 1. 0
313, 919, 3111111111113, 311111111111113, 1111111111111111111, 11111111111111111111111, 3111111111111111111111111111113 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

PROG

(PARI) n10np1(n, d) = { local(x, y, k); for(x=1, n, for(k=1, 9, y=10^(x+1)*k+floor(10^x*d/9)*10+k; if(isprime(y), print1(y", ")) ) ) }

CROSSREFS

Sequence in context: A090514 A068681 A082436 * A200912 A123059 A083997

Adjacent sequences:  A108842 A108843 A108844 * A108846 A108847 A108848

KEYWORD

easy,nonn,base

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Jul 11 2005

EXTENSIONS

Name changed by Arkadiusz Wesolowski, Sep 07 2011

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Last modified February 17 16:36 EST 2012. Contains 206058 sequences.