Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 286: | \[{5^{286}-1\over4}\] | 2 × 3 × 23 × 67 × 5227 × 5281 × 38923 × 2010581 × 12207031 × 305175781 × 2253938672701<13> × 24615836446631<14> × 567618483045329<15> × 53130566763791958299<20> × 3028704600213534236926361<25> × 115878974164753927617074729<27> × 460183952753824357170225842292658707895690816315909<51> |