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A174288 Primes p such that 8*2^(2p)-1 is also prime. 0
2, 5, 7, 29, 43, 1607 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
These are the primes in A139481. [From R. J. Mathar, Mar 17 2010]
LINKS
EXAMPLE
For p=2, 8*2^4-1=127; p=5, 8*2^10-1=8191; p=7, 8*2^14-1=131071
PROG
(Magma) [p: p in PrimesUpTo(4500)| IsPrime(8*2^(2*p)-1)]
CROSSREFS
Sequence in context: A082013 A171831 A192560 * A293062 A293063 A215211
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Mar 15 2010
STATUS
approved

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Last modified March 1 08:00 EST 2024. Contains 370430 sequences. (Running on oeis4.)