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
Keywords
Links
- Vincenzo Librandi, Table of n, a(n) for n = 1..34
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).
Programs
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Magma
[a: n in [0..500] | IsPrime(a) where a is 2^n+39];
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Mathematica
Select[Table[2^n + 39, {n, 0, 500}], PrimeQ]
Comments