Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
76: | \[{19^{76}-1\over18}\] | 23 × 5 × 181 × 1217 × 108301 × 1049219 × 870542161121<12> × 109912203092239643840221<24> × 8884596062918674650119991208333781915308073<43> |