Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 231: | \[{7^{231}-1\over6}\] | 3 × 19 × 29 × 1123 × 3631 × 4733 × 293459 × 1532917 × 12323587 × 724487149 × 1793870233 × 6809710909<10> × 11898664849<11> × 125844538662442909<18> × 3752691545947560669458268649<28> × 88262612316754526107621113329689<32> × 354384553868912826464966287953214689573210253717<48> |