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A102386 Numbers n such that n99999 is prime. 0
1, 5, 7, 11, 13, 17, 25, 26, 29, 34, 47, 49, 55, 67, 77, 80, 98, 101, 110, 115, 118, 124, 133, 134, 136, 143, 158, 169, 181, 188, 193, 199, 209, 211, 220, 224, 227, 239, 241, 248, 250, 260, 265, 266, 277, 280, 293, 299, 301, 302, 311, 313, 320, 326, 337, 340, 343, 346, 364, 365, 370, 371, 382, 398 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..64.

EXAMPLE

If n=1, then n99999 = 199999 (prime).

If n=34, then n99999 = 3499999 (prime).

If n=98, then n99999 = 9899999 (prime).

PROG

(MAGMA) [ n: n in [1..700] | IsPrime(Seqint([9, 9, 9, 9, 9] cat Intseq(n))) ]; // From Vincenzo Librandi, Feb 04 2011

CROSSREFS

Sequence in context: A015914 A023201 A106059 * A038958 A109416 A132170

Adjacent sequences:  A102383 A102384 A102385 * A102387 A102388 A102389

KEYWORD

base,nonn

AUTHOR

Parthasarathy Nambi, Feb 22 2005

STATUS

approved

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Last modified December 21 13:36 EST 2014. Contains 252321 sequences.