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Search: id:A136009
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| A136009 |
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Primes p for which the least pentagonal number q=n(3n+/-1)/2 which makes p+q prime satisfies 2q > p. |
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+0
1
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| 3, 7, 13, 19, 23, 37, 43, 73, 103, 359, 503
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Is the list complete?
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REFERENCES
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G. N. Watson, Math. Notes 2103. ``A Curious Property of the Prime Number 503,'' Math. Gaz. vol 33, no 306, Dec 1949, pp302--303.
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EXAMPLE
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For p=23, q=126. For p=503, q=590.
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CROSSREFS
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Sequence in context: A133261 A113911 A051635 this_sequence A056531 A102828 A117679
Adjacent sequences: A136006 A136007 A136008 this_sequence A136010 A136011 A136012
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KEYWORD
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more,nonn
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AUTHOR
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Chris K. Caldwell (caldwell(AT)utm.edu), Mar 18 2008
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