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A109605
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Numbers n such that 100000n + 91111 is prime.
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0
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6, 7, 12, 18, 30, 39, 67, 69, 72, 82, 96, 105, 109, 118, 120, 123, 132, 142, 144, 147, 148, 156, 159, 166, 175, 181, 184, 195, 204, 205, 211, 223, 225, 228, 243, 244, 246, 247, 259, 270, 271, 288, 303, 312, 334, 342, 343, 345, 351, 355, 364, 366, 376, 379
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 96 is in the sequence because 100000*96+91111 = 9691111 is prime.
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MAPLE
| c:=proc(x, y) local s: s:=proc(m) nops(convert(m, base, 10)) end: x*10^s(y)+y: end: a:=proc(n) if isprime(c(n, 91111))=true then n else fi end: seq(a(n), n=0..400); # c is the process which concatenates two positive integers (Deutsch)
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PROG
| (MAGMA) [ n: n in [0..400] | IsPrime(100000*n+91111) ];
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CROSSREFS
| Sequence in context: A037364 A105329 A155942 * A069198 A069136 A047335
Adjacent sequences: A109602 A109603 A109604 * A109606 A109607 A109608
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KEYWORD
| nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jul 30 2005
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EXTENSIONS
| More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 07 2005
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