Found with PFGW Version 3.8.0

1400^13021-13021^1400 is 2-PRP! (34.7956s+0.0073s)
1400^13021-13021^1400 is 3-PRP! (37.2605s+0.0075s)
1400^13021-13021^1400 is 5-PRP! (34.7887s+0.0083s)
1400^13021-13021^1400 is 7-PRP! (34.7988s+0.0080s)
1400^13021-13021^1400 is 11-PRP! (34.7329s+0.0081s)

Primality testing 1400^13021-13021^1400 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 13, base 2+sqrt(13)
Calling N+1 BLS with factored part 0.03% and helper 0.00% (0.09% proof)
1400^13021-13021^1400 is Fermat and Lucas PRP! (173.3396s+0.0049s)

To be completed...