Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 106: | \[{7^{106}-1\over6}\] | 23 × 107 × 8269 × 319591 × 345449549 × 35416476134069<14> × 58902316970027001503<20> × 38904276017035188056372051839841219<35> |