Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 448: | \[{31^{448}-1\over30}\] | 210 × 13 × 17 × 29 × 37 × 113 × 409 × 449 × 1129 × 1889 × 2129 × 4801 × 7253 × 11971 × 13469 × 27329 × 71821 × 1347329 × 6139297 × 23277313 × 277739477 × 917087137 × 25085030513<11> × 2107875850753<13> × 3117962927633<13> × 36004683284137<14> × 28546195913899558273<20> × 102910619004244172801<21> × 152490484148901066281<21> × 523694468332725375841<21> × 55107727353928381036964167246494350909954881<44> × 2121734092665157406108976641321341571103440372921057<52> × 282907604602113222534489518204438135392068665341989540800955849375475626814008118102814570535472828004058597095694115351201<123> × 7894877838689329417954911289908730286759296446335839165923731268537799520216767992635984858273020364688146756526211464706544369347039670751571330705533678550563646940407195109555561775964895999328515505940104064463683380855219307201<232> |