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A064699
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Integers for which the smallest m in A040076 such that n*2^m+1 is prime (A050921) increases.
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7
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1, 3, 7, 17, 19, 31, 47, 383, 2897, 3061, 4847, 5359, 10223
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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a = -1; Do[m = 0; While[ !PrimeQ[n*2^m + 1], m++ ]; If[m > a, a = m; Print[n]], {n, 1, 10^3} ]
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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Corrected and extended by T. D. Noe, Nov 15 2010
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STATUS
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approved
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