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A066101
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Primes of the form q = p^6 + p^3 + 1 = sigma_3(p^2), where p is prime.
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2
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73, 757, 1772893, 48551233240513, 378890487846991, 3156404483062657, 17390284913300671, 280343912759041771, 319913861581383373, 487014306953858713, 7824668707707203971, 8443914727229480773, 32564717507686012813, 48095468363380957093, 54811417636756749151
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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73 = 64 + 8 + 1, 757 = 729 + 27 + 1, etc.
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PROG
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(PARI) { n=0; for (m=1, 10^9, p=prime(m); q=p^6 + p^3 + 1; if (isprime(q), write("b066101.txt", n++, " ", q); if (n==200, return)) ) } \\ Harry J. Smith, Nov 13 2009
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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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