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Search: id:A068830
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| A068830 |
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Smallest member of the first occurrence of exactly n consecutive primes with all odd digits. |
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+0
3
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| 97, 31, 71, 191, 311, 53717, 3, 1137911, 3539995913, 379537751, 195513511313
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The next term is > 10000000. - Larry Reeves (larryr(AT)acm.org), Oct 09 2003
Found an old note: This sequence and also A068831 and A068832 should have the keyword "BASE" added. A068830 also has an extraneous "M" in "Ma(9)-a(11)". [From Rick L. Shepherd (rshepherd2(AT)hotmail.com), Aug 28 2008]
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EXAMPLE
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a(2) = 31, the two primes are 31 and 37. a(7) = 3 and the primes are 3,5,7,11,13,17 and 19.
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CROSSREFS
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Sequence in context: A106429 A126840 A094498 this_sequence A033417 A088866 A075478
Adjacent sequences: A068827 A068828 A068829 this_sequence A068831 A068832 A068833
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KEYWORD
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hard,more,nonn,base
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 09 2002
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EXTENSIONS
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1137911 from Larry Reeves (larryr(AT)acm.org), Oct 09 2003
Ma(9)-a(11) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Apr 03 2008
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