@Dolfin:
d215! = (163) = 163
d215! = (163) = 163d163! = (21) = 21d21! = (4) = 4d4! = (1) = 1d420 = (74) = 74d74! = (62) = 62d62! = (18) = 18d18! = (1) = 1d69! = (52) = 52d52! = (23) = 23d23! = (2) = 2d2! = (2+1) = 3d3! = (1) = 1d10000 = (6592) = 6592d100000 = (67717) = 67717d1000000 = (338492) = 338492d10000000 = (9547595) = 9547595d100000000 = (19526318) = 19526318d1000000000 = (443051178) = 443051178d100000000! = (27553531) = 27553531d27553531! = (23734025) = 23734025d4000000000 = (571607172) = 571607172d23734025! = (313625) = 313625d313625! = (101147) = 101147d101147! = (46134) = 46134d46134 = (34192) = 34192d4294967295 = (2759197332) = -1535769964d46134! = (29439) = 29439d29439! = (5649) = 5649