A173831 Largest prime < n^4.

13, 79, 251, 619, 1291, 2399, 4093, 6553, 9973, 14639, 20731, 28559, 38393, 50599, 65521, 83497, 104971, 130307, 159979, 194479, 234239, 279823, 331769, 390581, 456959, 531383, 614639, 707279, 809993, 923513, 1048573, 1185907, 1336333

Offset

2,1

Links

Table of n, a(n) for n=2..34.

Mathematica

PrimePrev[n_]:=Module[{k}, k=n-1; While[ !PrimeQ[k], k-- ]; k]; f[n_]:=n^4; lst={}; Do[AppendTo[lst, PrimePrev[f[n]]], {n, 5!}]; lst
NextPrime[Range[2, 40]^4, -1] (* Harvey P. Dale, May 05 2018 *)

Crossrefs

Cf. A014220, A053001, A077037

Sequence in context: A060216 A041318 A142056 * A081584 A125323 A075584

Adjacent sequences: A173828 A173829 A173830 * A173832 A173833 A173834

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Feb 25 2010

Status

approved