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A065584
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Smallest prime beginning with exactly n 1's.
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17
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2, 13, 11, 1117, 11113, 111119, 11111101, 11111117, 111111113, 11111111129, 11111111113, 1111111111139, 11111111111123, 1111111111111013, 1111111111111123, 11111111111111101, 11111111111111119
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Largest terms are only probable primes. Some terms of the sequence are also in A004022 (repunit primes) or A056710 (all digits same except last digit). All terms of A004022 are in the current sequence.
According to the Magma Calculator (at http://magma.maths.usyd.edu.au/calc/), all 201 terms in the table (and thus all 17 terms listed above) are, in fact, prime. [From Jon E. Schoenfield (jonscho(AT)hiwaay.net), Aug 24 2009]
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LINKS
| Maximilian Hasler, Table of n, a(n) for n = 1..201
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CROSSREFS
| Cf. A065821, A068103, A068104, A068105.
Cf. A004022 (repunit primes), A056710 (near-repdigit primes).
Sequence in context: A158088 A124869 A157480 * A153651 A075032 A032932
Adjacent sequences: A065581 A065582 A065583 * A065585 A065586 A065587
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KEYWORD
| nonn,base
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 28 2001
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EXTENSIONS
| Corrected by Don Reble, Jan 17 2007
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