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Search: id:A105185
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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
1
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OFFSET
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1,2
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EXAMPLE
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19,149,1439,14389,1438109,... etc. are all prime.
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CROSSREFS
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Cf. A110436, A110437, A109744.
Sequence in context: A131416 A004125 A137924 this_sequence A165739 A137503 A108624
Adjacent sequences: A105182 A105183 A105184 this_sequence A105186 A105187 A105188
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KEYWORD
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base,more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 03 2005
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