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URL: https://oeis.org/A195137

⇱ A195137 - OEIS

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A195137
Primes of the form abs(2^n - prime(n)^2).
0
2, 5, 17, 89, 1087, 30559, 127591, 8381719, 134207119, 140737488310807, 3450873173395281893717377931138512726225554486085193277581262109788439
OFFSET
1,1
COMMENTS
The next term has 138 digits. - Harvey P. Dale, Jun 01 2014
MATHEMATICA
Union[Select[Table[Abs[2^n-Prime[n]^2], {n, 500}], PrimeQ]] (* Harvey P. Dale, Jun 01 2014 *)
PROG
(PARI) print1("2, 5, 17, 89"); n=10; forprime(p=31, 1e4, if(isprime(t=abs(2^n++-p^2)), print1(", "t))) \\ Charles R Greathouse IV, Sep 11 2011
CROSSREFS
Sequence in context: A016121 A216519 A245108 * A026822 A059248 A203006
KEYWORD
nonn
AUTHOR
EXTENSIONS
Terms corrected by Charles R Greathouse IV, Sep 11 2011
STATUS
approved