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A106700
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Numbers k such that 9973*k - 1009 is prime.
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1
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32, 72, 74, 90, 92, 96, 102, 104, 114, 116, 120, 144, 156, 200, 210, 216, 230, 236, 242, 260, 270, 272, 294, 296, 312, 314, 324, 326, 336, 344, 354, 386, 432, 450, 456, 464, 476, 494, 516, 522, 530, 546, 566, 600, 620, 630, 632, 660, 686, 714, 716, 726, 734
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OFFSET
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1,1
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COMMENTS
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1009 and 9973 are the smallest and largest of four-digit primes.
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LINKS
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EXAMPLE
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If k=32, then 9973*k - 1009 = 318127 (prime).
If k=116, then 9973*k - 1009 = 1155859 (prime).
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MATHEMATICA
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Select[Range[1000], PrimeQ[9973#-1009]&] (* Harvey P. Dale, Jan 29 2013 *)
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PROG
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MAGMA) [n: n in [1..100000] | IsPrime(9973*n - 1009)]; // Vincenzo Librandi, Nov 13 2010
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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