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Search: id:A159346
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| A159346 |
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a(n)=smallest n-digit prime formed by appending a digit to a(n-1); a(1)=409. |
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+0
1
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| 409, 4099, 49993, 409933, 4099339, 40993391, 409933919, 4099339193, 40993391939, 409933919393, 4099339193939
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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There is no prime a(12) since 40993391939391, 40993391939393, 40993391939397, 40993391939399 are not prime.
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EXAMPLE
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a(1)=409, a(2)=4099, a(3)=40993, a(4)=409933, a(5)=4099339, a(6)=40993391, a(7)=409933919, a(8)=4099339193, a(9)=40993391939, a(10)=409933919393, a(11)=4099339193939
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CROSSREFS
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Cf. A000040, A100894, A100895.
Sequence in context: A139661 A052354 A052376 this_sequence A107625 A061333 A157431
Adjacent sequences: A159343 A159344 A159345 this_sequence A159347 A159348 A159349
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KEYWORD
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fini,nonn,base,full
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AUTHOR
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Vladislav-Stepan Malakhovsky and Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Apr 11 2009
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