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A177141
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Primes of the form (6*10^k-7)
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1
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53, 593, 599993, 5999993, 59999993, 599999999993, 599999999999999993, 599999999999999999999999999993, 5999999999999999999999999999999999999999993, 599999999999999999999999999999999999999999999993
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OFFSET
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1,1
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COMMENTS
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The next term -- a(11) -- has 97 digits. - Harvey P. Dale, Nov 15 2021
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LINKS
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FORMULA
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MAPLE
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select(isprime, [seq(6*10^k-7, k=1..100)]); # Robert Israel, Jan 22 2024
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MATHEMATICA
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able[10 FromDigits[PadRight[{5}, n, 9]]+3, {n, 50}], PrimeQ] (* Harvey P. Dale, Nov 15 2021 *)
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PROG
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(Magma) [a: n in [0..250]|IsPrime(a) where a is 6*10^n-7]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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