Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
158: | \[{13^{158}-1\over12}\] | 2 × 7 × 3793 × 16433 × 25202746699639<14> × 6709792556882923<16> × 1999561631486182208460037804951465687912381337222920142652723329<64> × 28441265858900672523892206572025124574932474821838530229558719043352059843<74> |