Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 216: | \[{15^{216}-1\over14}\] | 26 × 13 × 17 × 19 × 37 × 73 × 109 × 113 × 211 × 241 × 541 × 739 × 811 × 1489 × 3877 × 7993 × 21061 × 24481 × 16354441 × 284329009 × 964764793 × 2562840001 × 829049498029<12> × 2560392206677<13> × 3506657472973<13> × 9763752384289<13> × 124763699844001<15> × 1477891879996957031251<22> × 3000251475702847870957<22> × 7139172431498648873862278953<28> × 670077016988344111387969185955834176769<39> |