Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 171: | \[{6^{171}-1\over5}\] | 192 × 43 × 191 × 2467 × 47881 × 820459 × 638073026189<12> × 219815829325921729<18> × 25896916098621777025320461067950269867<38> × 2219821955745760247086895900084483710540707577<46> |