A176061 Numbers n such that 41#*2^n-1 is prime, where # denotes the primorial, A002110.

0, 2, 5, 8, 9, 12, 14, 16, 32, 36, 42, 43, 62, 69, 72, 76, 95, 98, 102, 166, 179, 290, 324, 332, 393, 457, 569, 661, 788, 816, 904, 952, 986, 1004, 1036, 1064, 1091, 1279, 1307, 1491, 1496, 1521, 1597, 1740, 1760, 1856, 2104, 2196, 2402, 2699, 2943, 2999, 3095, 3509, 3584, 3890, 3927, 4074, 4454, 5162, 5635, 5860, 6288, 6478, 6675, 6911, 7455, 7806, 10409, 10735, 11719, 12312, 14789, 15171, 18031, 18764, 23033, 23461, 26192, 31490, 32259, 37641, 41899, 53582, 57425, 59724, 63535, 87393, 95326

Offset

1,2

Comments

41# = 304250263527210.

Links

Table of n, a(n) for n=1..89.

Mathematica

Select[Range[0, 100], PrimeQ[304250263527210*2^# - 1] &]

Crossrefs

Sequence in context: A362310 A161154 A174438 * A183234 A108968 A289628

Adjacent sequences: A176058 A176059 A176060 * A176062 A176063 A176064

Keyword

nonn

Author

Pierre CAMI, Dec 06 2010

Status

approved