Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[{19^{151}-1\over18}\] | 907 × 22651 × 93319 × 2240313849259<13> × 1709190498941659711176875673799<31> × 93488278288838939971344591552373357860529166623185119491649629737809193685226301434298416877511759910780117176633942933844211831516234967<137> |