This is a PRP value of the Ramanujan Tau function.
http://dx.doi.org/10.1007/s11139-012-9420-8
http://www.wolframalpha.com/input/?i=RamanujanTau[41^28288]
3-PRP according to PFGW
Passed the Baillie-PSW primality test with Pari/GP, in 26h 04m.
To be completed...