Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
71: | \[{16^{71}-1\over15}\] | 569 × 228479 × 48544121 × 56409643 × 148587949 × 212885833 × 4999465853<10> × 5585522857<10> × 472287102421<12> × 13952598148481<14> |