Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 815: | \[{5^{815}-1\over4}\] | 11 × 71 × 21191 × 4599209 × 40100609 × 675775181 × 6582151087844246659<19> × 33596633405529951211752346481<29> × 102556399583828574447011133455059<33> × 2835390828069919584008238108700801<34> × 2541462766396986870745222882425433052891<40> × 23230427545093989573574035606899884718671<41> × 54938978785399383334196504918901015066871425911<47> × 4978019070778465969873397393941797403128296569832548381<55> × 2552600789406817216543085305668151982866216847101400563370412871<64> × 87855315109257143338670779766109110941856976397892463693622420012151561<71> × 238224470170320147689005309388272967328101622006402811892220195897458445648887056167709002321615634137866853061<111> |