Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 488: | \[{13^{488}-1\over12}\] | 23 × 5 × 7 × 17 × 4027 × 4759 × 7687 × 14281 × 27817 × 92110001 × 4672993939<10> × 6024266671<10> × 298681203493<12> × 1535617756259<13> × 48401662036451<14> × 87103671046409436847<20> × 2306860055683352406587860779838313<34> × 8626498609074269149060403255784440097670457<43> × 5430070940678239753940742980261783863910813321498082570141652711800111048829484922202178873<91> × [2220185940129534480522686389353850371154817252589092107208659925661428863209274063895950514185436484067252091019278473893282545355590069364804821492586114460027176636896721998446998527671976122505048784806983654609480953093698420137119562558049044395096473859424216801<268>] |