Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
121: | \[{22^{121}-1\over21}\] | 67 × 353 × 1176469537 × 183223035161<12> × 1232392032046927631248408326567483219376348811693073011777<58> × 20547828655644009398995273407796292699360934958962860080838913868058290818994409<80> |