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A058941
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Numbers k such that 3 + (integer formed from first k digits after decimal point in Pi) is prime.
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1
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OFFSET
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1,2
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COMMENTS
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No more terms below 10^3. - Patrick De Geest, Nov 25 2001
It is a probable prime for k = 10090. - Metin Sariyar, Jul 02 2020
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LINKS
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Table of n, a(n) for n=1..8.
G. L. Honaker, Jr. and C. K. Caldwell, Prime Curios! 1415929
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EXAMPLE
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a(3) = 7 because 3 + 1415926 is prime.
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MATHEMATICA
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Select[Range[0, 1000], PrimeQ[3+Floor[(Pi-3)*10^#]]&] (* Metin Sariyar, Jul 02 2020 *)
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CROSSREFS
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Cf. A000796, A051710.
Sequence in context: A231580 A182408 A057298 * A287327 A020066 A024719
Adjacent sequences: A058938 A058939 A058940 * A058942 A058943 A058944
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KEYWORD
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base,nonn,hard,more
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AUTHOR
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G. L. Honaker, Jr., Jan 12 2001
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EXTENSIONS
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a(7) from Patrick De Geest, Nov 25 2001
a(8) from Metin Sariyar, Jul 02 2020
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STATUS
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approved
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