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A110933
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Integers n such that 3*10^n+71 is a prime number.
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0
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4, 7, 16, 19, 190, 227, 235, 283, 319, 1655, 3955, 10666
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OFFSET
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1,1
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COMMENTS
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See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable/proven prime - search on "30071".
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LINKS
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Table of n, a(n) for n=1..12.
Makoto Kamada, List of near-repdigit-related prime numbers.
Index entries for primes involving repunits.
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EXAMPLE
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n = 7 is a member because: 3*10^7+71 = 3*10000000+71 = 30000000+71 = 30000071, which is prime.
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CROSSREFS
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Cf. A049054, A088274, A088275, A095688, A107083, A108049, A108050, A108052, A108054.
Sequence in context: A130665 A212062 A101534 * A067398 A054599 A095755
Adjacent sequences: A110930 A110931 A110932 * A110934 A110935 A110936
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KEYWORD
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more,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005
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EXTENSIONS
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a(12) from Ray Chandler, Dec 23 2010
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STATUS
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approved
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