Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
197: | \[{6^{197}-1\over5}\] | 2235557 × 10123252906683101<17> × 17463065656331085945714756434111949074627823133581528724293757040963477608062886746299031764064166669399231758382566178902534282211<131> |