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Search: id:A123366
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| A123366 |
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Primes of the form 10*(10^(x+1)+10^x-1)+7. |
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+0
1
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| 1097, 1099997, 10999997, 1099999997, 1099999999999999999999997, 10999999999999999999999997, 1099999999999999999999999999999999999999997, 10999999999999999999999999999999999999999999999999999999999999999997
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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10(10^803+10^802-1)+7 is the largest PRP with less than 1000 digits.
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PROGRAM
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(PARI) g(n) = for(x=1, n, y=10*(10^(x+1)+10^x-1)+7; if(ispseudoprime(y), print1(y", ")))
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CROSSREFS
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Adjacent sequences: A123363 A123364 A123365 this_sequence A123367 A123368 A123369
Sequence in context: A091674 A022197 A124122 this_sequence A096926 A078199 A050926
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Oct 12 2006
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