Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 107: | \[{13^{107}-1\over12}\] | 2141 × 3286126349184953<16> × 1842708018885404721657218228344276394838382971121554990878798778219059086476647798269311913985066291<100> |