Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 309: | \[{12^{309}-1\over11}\] | 157 × 3709 × 7417 × 1309643353 × 2001736609 × 309374768985359817697<21> × 13951770188639477959439<23> × 226319692803146344014357964333823<33> × 1143630800580569683259972155090034378209<40> × 263635209887150875569050631759020888724964357478349281766142758325445593<72> × 79899083447503031682833518909825168265419096512029812494035460885938979968795250261233493387609561041039732847820686781<119> |