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A228486 Near primorial primes: primes p such that p+1 or p-1 is a primorial number (A002110). 0

%I

%S 2,3,5,7,29,31,211,2309,2311,30029,200560490131,304250263527209,

%T 23768741896345550770650537601358309

%N Near primorial primes: primes p such that p+1 or p-1 is a primorial number (A002110).

%C The next few terms are too large to add: 317#-1, 337#-1, 379#+1, 991#-1. - _Charles R Greathouse IV_, Sep 12 2013

%H Physicsforums, <a href="http://www.physicsforums.com/showthread.php?s=3a74a1b4dee5a5d18facf8ab540c7133&amp;p=4479869#post4479869">comment defining this sequence</a>.

%F A057705 UNION {primes p such that p-1 is a primorial number} = {primes p such that p+1 is a primorial number (A002110)} UNION {primes p such that p-1 is a primorial number}.

%Y Cf. A000040, A002110, A057705, A228485.

%K nonn

%O 1,1

%A _Jonathan Vos Post_, Aug 22 2013

%E a(1)-a(2), a(7), a(11) inserted by _Charles R Greathouse IV_, Sep 12 2013

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Last modified August 15 13:20 EDT 2020. Contains 336504 sequences. (Running on oeis4.)