If you look at this WU there is 7 results. It looks like to me that is nearly impossible that 2 of 7 computers cannot give correct result? I have never returned errored or invalid results, but in this case it looks so :(
____________ 314187728^131072+1 GENERALIZED FERMAT :)
93*10^1029523-1 REPDIGIT PRIME
31*332^367560+1 CRUS PRIME
Proud member of team Aggie The Pew. Go Aggie!