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A096178 Primes of the form primorial(p)/2+2. 3
5, 17, 107, 15017, 3234846617, 100280245067, 3710369067407, 307444891294245707, 961380175077106319537, 139867498408927468089138080936033904837498617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes of the form A070826(n)+2.

LINKS

Table of n, a(n) for n=1..10.

Dario Alpern, Factorization using the Elliptic Curve Method.

EXAMPLE

a(3)=107 because 107 is a prime of the form primorial(7)/2+2=A070826(4)+2=2*3*5*7/2+2.

CROSSREFS

Cf. A070826, A096177 primes p such that primorial(p)/2+2 is prime, A096547 primes p such that primorial(p)/2-2 is prime, A067024 smallest p+2 that has n distinct prime factors, A014545 primorial primes, A087398.

Sequence in context: A240803 A098028 A100301 * A084167 A267143 A234797

Adjacent sequences:  A096175 A096176 A096177 * A096179 A096180 A096181

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Jun 27 2004

STATUS

approved

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Last modified February 23 09:27 EST 2018. Contains 299504 sequences. (Running on oeis4.)