Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 136: | \[{31^{136}-1\over30}\] | 27 × 13 × 37 × 103 × 137 × 409 × 953 × 1129 × 11833 × 1399577 × 63574561 × 224499664484159761<18> × 6841661642646463343047<22> × 751670559138758105956097<24> × 1682325489672499143634073<25> × 2850730963499627035635268413461504973494471483967830567584868250190896297004777<79> |