Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 813: | \[{4^{813}-1\over3}\] | 3 × 7 × 1627 × 24391 × 450403 × 2248759 × 36936217 × 15242475217<11> × 88760231089<11> × 152948738791<12> × 115417966565804897<18> × 897186516077633497<18> × 4635260015873357770993<22> × 49322756803485314471713<23> × 1453023029482044854944519555964740294049<40> × 11170585420277403973061107961387073788895978930714757404139<59> × 11977275093663989096011858527657236836933018932778061885567585635006579<71> × 248927757868131890277330541567820045256364273970773286542188386932989391<72> × 134567887054668214515161203566320679757253483787282009808886842167567907197836768970162992655659228685857074681<111> |