Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 646: | \[{16^{646}-1\over15}\] | 172 × 137 × 229 × 457 × 647 × 953 × 1217 × 7753 × 10337 × 26317 × 43691 × 131071 × 148961 × 174763 × 354689 × 524287 × 525313 × 5779117 × 2879347902817<13> × 24517014940753<14> × 17795830908608814443<20> × 39044358788825633753<20> × 3211586054639813621611<22> × 6319957642033539607139<22> × 2065255878519475622261353<25> × 1685694802571764886364908561<28> × 1269639828454588763972435091645259869185718465075550865591017<61> × 20771818970392243836470263731452936244474866163020311768392678268525318218329<77> × 249147757847883641915066371915681435518884487150405753848378560538360810463103423741441<87> × [38557156290682079963320362504579597057451354735618121718998568469457812965678747816141009755698099904778289909713623359528515795011959301251193955191014131445239685098641045087421425847067326004548962930434404810082926442109049875338579985745188647262257213359536562505600829025199868797570781395630981324250113503155201<320>] |