Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 304: | \[{19^{304}-1\over18}\] | 25 × 5 × 17 × 181 × 1217 × 3833 × 8513 × 15073 × 40129 × 74177 × 108301 × 563377 × 1049219 × 6536609 × 870542161121<12> × 1768911570241<13> × 148490556214993<15> × 109912203092239643840221<24> × 38184210988752567254945089<26> × 67552947210940643628327889<26> × 163275467629926042283407634064707949509633<42> × 8884596062918674650119991208333781915308073<43> × 11719600317229566201530091990746033666583710609114353<53> × 7565626792365487817628989938732632987759711487179922287757995390138523876372500876353<85> |