Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
169: | \[{13^{169}-1\over12}\] | 53 × 677 × 264031 × 1803647 × 3221968439 × 200764162484293733261<21> × 586814952741629335333029441607<30> × 9678439913990009887548497710458137<34> × 239585366205256084905541723882339448234993818878575701686813928799974012544413<78> |