Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 391: | \[{17^{391}-1\over16}\] | 47 × 10949 × 1749233 × 6052681 × 2699538733 × 3945876538133<13> × 26552618219228090162977481<26> × [55244384321342311305560246381187316911680862837780167320563078086068815987289317518772491040223584758416566289290557347509723159005805700507278775840860623854434308702151146308993843643388749042573<197>] × [9360778535476151454026423036202382136523675274953192129543800850017488851000545774044460828628918736403263371881497687850345858741450342068997270867691148939366512037181846274077750352579343906087845231400632500577769<217>] |