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Search: id:A077573
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| A077573 |
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Smallest number of the form (10^k -1)/9 == 0 (mod prime(n)). with a(1) = a(3) = 0. |
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+0
3
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| 0, 111, 0, 111111, 11, 111111, 1111111111111111, 111111111111111111, 1111111111111111111111, 1111111111111111111111111111, 111111111111111, 111, 11111, 111111111111111111111, 1111111111111111111111111111111111111111111111
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OFFSET
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1,2
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COMMENT
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For every prime p > 5, {10^(p-1) -1}/9 == 0 (mod p), by Fermat's Little theorem.
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REFERENCES
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Amarnath Murthy, On the divisors of Smarandache Unary Sequence. Smarandache Notions Journal, Vol. 11, 2000.
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CROSSREFS
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Cf. A071126.
Sequence in context: A143750 A028673 A138280 this_sequence A123698 A123727 A072807
Adjacent sequences: A077570 A077571 A077572 this_sequence A077574 A077575 A077576
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 11 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 04 2003
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