Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 310: | \[{5^{310}-1\over4}\] | 2 × 3 × 11 × 71 × 311 × 521 × 1303 × 1861 × 11161 × 21701 × 257611 × 5624951 × 21207101 × 28086211607<11> × 31473312961<11> × 108674992710961<15> × 625552508473588471<18> × 21783999170235219053011<23> × 145475949458129109023753501<27> × 174583335852767865379025002452121<33> × 2630523871858031528145586480948032725521<40> |