Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 665: | \[{5^{665}-1\over4}\] | 11 × 71 × 191 × 211 × 631 × 2851 × 4201 × 6271 × 9311 × 19531 × 65171 × 281429 × 347131 × 3981071 × 4113691 × 85280581 × 3257947519 × 152317058321<12> × 1245576402371959291<19> × 11600321878916922053491<23> × 29090007107767075239783794592001366542871<41> × 426361515667769851699539882056479395496411<42> × 197093734279293731287445626494587381600438850930731<51> × 137923350203418366792985771276520447687514438390180641240356297004567842832943669885301440674859635891<102> × 28004338472315628896590461839191169992955806118566746634991247508151163836719247597803769521667940276121<104> |