n5-L3-f7-r13-t1-ver2.6GCD.txt p=21871 t0=1 g=6 Criterion for 1<=t<=f is applied. T^2+T+1 63141 T^2+62424 T+61180 result=O: deg GCD == 0. code version 2.6GCD start=Wed 12 Apr 2023 13:09:47 end =Wed 12 Apr 2023 13:09:48 elapsed(sec)=0.082461