Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
90: | \[{19^{90}-1\over18}\] | 22 × 32 × 52 × 73 × 11 × 31 × 61 × 127 × 151 × 199 × 211 × 271 × 523 × 911 × 2251 × 6661 × 29989 × 236377 × 584911 × 1081291 × 2460181 × 8374006851436085760993151<25> × 735546785834162565719034301<27> |