Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 316: | \[{13^{316}-1\over12}\] | 22 × 5 × 7 × 17 × 317 × 3793 × 16433 × 25202746699639<14> × 6709792556882923<16> × 1999561631486182208460037804951465687912381337222920142652723329<64> × 28441265858900672523892206572025124574932474821838530229558719043352059843<74> × 1868708155150503079353790454374267723371139732237726864978682975261509774777000895346631164807043911310386712017951061671738979128681262631215995038388324288078711128016077<172> |