A243429 Primes of the form 2^n + 39.

41, 43, 47, 71, 103, 167, 1063, 2087, 8231, 131111, 536870951, 8589934631, 549755813927, 8796093022247, 154742504910672534362390567, 40564819207303340847894502572071, 162259276829213363391578010288167, 2722258935367507707706996859454145691687

Offset

1,1

Comments

Associated n: 1, 2, 3, 5, 6, 7, 10, 11, 13, 17, 29, 33, 39, 43, 87, 105, 107, 131, 253, 329, ....

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..34

Mathematica

Select[Table[2^n + 39, {n, 0, 500}], PrimeQ]

Prog

(Magma) [a: n in [0..500] | IsPrime(a) where a is 2^n+39];

Crossrefs

Cf. primes of the form 2^n+k: A092506 (k=1), A057733 (k=3), A123250 (k=5), A104066 (k=7), A104070 (k=9), A156940 (k=11), A104067 (k=13), A144487 (k=15), A156973 (k=17), A104068 (k=19), A156983 (k=21), A176922 (k=23), A104072 (k=25), A104071 (k=27), A156974 (k=29), A104069 (k=31), A176926 (k=33), A176927 (k=35), A176924 (k=37), this sequence (k=39), A176925 (k=41), A243430 (k=43), A243431 (k=45), A243432 (k=47), A104073 (k=49).

Sequence in context: A273756 A154498 A223458 * A345346 A062669 A284290

Adjacent sequences: A243426 A243427 A243428 * A243430 A243431 A243432

Keyword

nonn

Author

Vincenzo Librandi, Jun 05 2014

Status

approved