Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 62: | \[{13^{62}-1\over12}\] | 2 × 7 × 311 × 373 × 1117 × 2729 × 145831193 × 16389023943543602257<20> × 8170509011431363408568150369<28> |