Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 61: | \[{18^{61}-1\over17}\] | 367831 × 4110876980385153863<19> × 1450744996988333189921892673782384233809551686747567<52> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 61: | \[{18^{61}-1\over17}\] | 367831 × 4110876980385153863<19> × 1450744996988333189921892673782384233809551686747567<52> |