Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 495: | \[{28^{495}-1\over27}\] | 32 × 192 × 31 × 199 × 271 × 2971 × 15991 × 262351 × 444979 × 637421 × 734941 × 2054581 × 6077039 × 48403441 × 50545507 × 16071033331<11> × 829366011211<12> × 4376814093829<13> × 548410786098121<15> × 94275090945167441<17> × 5906633396655970661<19> × 38681906982937869421<20> × 75223260922213952461<20> × 425141076149786955572181811<27> × 1114029602365666612314868561<28> × 4554890187723982098962291325301<31> × 2256086536806735559873959953740573846381<40> × 588059502384167741754689230237055517031269700136285805215376626148451<69> × [127625855638425224563946323380559391155410270966222530086671770492222478187547286377980084744274800045695299992604768493313700634788958883232043589651031259500142136016761972404385627342721184275387878934740315085190003150877017211620668999923098799975965017391379227388262289414943983040340093580065371446979636871889516629013691<330>] |