Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
233: | \[{5^{233}-1\over4}\] | 1318781 × 412500871 × 208771951788632309319091684496790985222571<42> × 122893706196784651098718052024745515496783278694509<51> × 129763238102791965820002447228325506194347966293946269029<57> |