A261472
Primes of the form Phi(6,n!), where Phi is the cyclotomic polynomial.
Original entry on oeis.org
3, 31, 14281, 25396561, 273552658381614558353373506071127403199540399874192973440773009599175173339925708800000001
Offset: 1
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Select[Table[Cyclotomic[6, n!], {n, 0, 200}], PrimeQ]
A261487
Primes of the form Phi(7,n!), where Phi is the cyclotomic polynomial.
Original entry on oeis.org
7, 127, 55987, 58301791288260114251803544692993535976160443849938371660801
Offset: 1
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Select[Table[Cyclotomic[7, n!], {n, 0, 200}], PrimeQ]
A261535
Primes of the form Phi(8,n!), where Phi is the cyclotomic polynomial.
Original entry on oeis.org
2, 17, 1297, 331777, 1503561738404723998944447273369600000001
Offset: 1
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Select[Table[Cyclotomic[8, n!], {n, 0, 200}], PrimeQ]
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for(n=1, 500, if(isprime(k=polcyclo(8, n!)), print1(k", "))) \\ Altug Alkan, Nov 16 2015
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