Base 27 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 68: | \[{27^{68}-1\over26}\] | 23 × 5 × 7 × 73 × 103 × 307 × 409 × 613 × 1021 × 1871 × 12853 × 30091 × 34511 × 956353 × 49637281 × 129159847 × 1743831169 × 99810171997<11> × 187668407555352123529<21> |