Challenge for Exercise 5

Compute the discrete logarithm of 448779669284668518559519248801729550530084412761036268891311221899537107169997508638204427416790909697863945298690630246869913882463614155520880819517025716769 to the base 3 modulo the prime 515435624341556560362518420756024885206544272775528642664081191900087258070891909746630086045124238045876795573930965747862098723866874422662389356560982867457.