Here is a new AP7 record at 1328 digits:-

(1246733996+35777939*n)*3109#+1 is prime for n=0..6

All confirmed prime with PFGW -tc

Input/output statistics:-
Numbers tested by NewPGen: 1*10^9
NewPGen reduced these (by sieving to 4 trillion) to: 2.78*10^8
PRP's found by PFGW: 2,067,593
AP6's found: 204
AP7's found: 0
The AP6's were all extended upwards and 1 AP7 found.
The search program was terminated at this point, about half way through.

Run-time statistics:-
NewPGen: 19 GHz-days
PFGW: 204 GHz-days
Pascal program to find AP7: 10 GHz-hrs

The expected AP6 count to get one AP7 was about 300.

-Mike Oakes