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Search: id:A110782
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| A110782 |
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Copies of 1,3,7 and 9 cyclically such that every partial concatenation is a prime. |
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+0
13
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| 11, 3, 777, 999, 11, 33333333, 777777777777777777777, 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999, 1111111111111111111111111
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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11,113,113777,113777999,... are all prime.
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CROSSREFS
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Cf. A110774, A110775, A110776, A110777, A110778, A110780, A110781, A110783.
Sequence in context: A038317 A079841 A069869 this_sequence A088073 A010187 A114267
Adjacent sequences: A110779 A110780 A110781 this_sequence A110783 A110784 A110785
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 12 2005
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EXTENSIONS
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More terms from Joshua Zucker, Jan 11 2006
The next term is 726 3's and is too large to include.
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