Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 351: | \[{31^{351}-1\over30}\] | 33 × 792 × 331 × 3637 × 13807 × 39703 × 42407 × 81343 × 132679 × 445069 × 2426789 × 2534689 × 7908811 × 175071781 × 1467780211 × 5363507449<10> × 23375101933<11> × 1836205027201<13> × 126901881805771<15> × 4618898267815261<16> × 28771998567593145352489<23> × 175500339130677572941801<24> × [5074707605002842000172667332922433107963897244529835410039453486262635241623008045311331684412511394745798368171033736643432103788651521314828411469921664398026422443576719284968810532980423765779213861142455307251395533449588514236524424280504362654462451065424929891736194931439191892632311588841677403160221473634937285420013403839253<337>] |