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A105185
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Least multiple of n such that every partial concatenation followed by a 9 is prime.
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0
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1, 4, 3, 8, 10, 30, 84, 56, 18, 100, 198, 108, 351, 42, 375, 128, 136, 450, 551, 600, 966, 66, 552, 336, 2125, 780, 594, 2576, 348, 2520, 4867, 288, 726, 1802, 5740, 2664, 6438, 722, 4446, 1080, 4674, 3150, 559, 1628, 8955, 3358, 15933, 576, 1764, 1700, 5763, 2652
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| 19,149,1439,14389,1438109,... etc. are all prime.
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CROSSREFS
| Cf. A110436, A110437, A109744.
Sequence in context: A171527 A198576 A175047 * A165739 A196132 A198179
Adjacent sequences: A105182 A105183 A105184 * A105186 A105187 A105188
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 03 2005
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EXTENSIONS
| More terms from Jon E. Schoenfield (jonscho(AT)hiwaay.net), May 16 2010
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