Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
48: | \[{22^{48}-1\over21}\] | 3 × 5 × 132 × 17 × 23 × 73 × 97 × 157 × 241 × 463 × 1489 × 3209 × 191353 × 286777 × 940993 × 3227992561 × 13278819202897<14> |