Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 306: | \[{31^{306}-1\over30}\] | 25 × 32 × 72 × 19 × 103 × 307 × 331 × 577 × 3637 × 17137 × 81343 × 1538083 × 1961163283 × 42834601810502407<17> × 78198146102753533<17> × 2796214962413636917873<22> × 6841661642646463343047<22> × 751670559138758105956097<24> × 195333779873358973907838097<27> × 261116663697161542351918133573442849307<39> × 1149848550030840109681441458473084046023279470768499643997603<61> × 5367372187592831333050309262349671111073716752557880050438677437<64> × 201826644114768002063745646190803184405042892728052180172416358859250340467495216313254851591891887712483636096433056488999<123> |