Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 549: | \[{5^{549}-1\over4}\] | 19 × 31 × 829 × 8419 × 32941 × 38431 × 1390069 × 918585913061<12> × 7158889135498126394539<22> × 15706193183022969029629<23> × 140194179307171898833699259<27> × 67914344051300763169591091761<29> × 12352989930372319778391703308975106672150219144503487556625570645932998318486231<80> × 15786910611608572151933615919570920019287733311030065854227025502988497719030991<80> × 97789032338453468797029205410146172430970451471174032175648076764532784003067680016666889<89> |