Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 213: | \[{17^{213}-1\over16}\] | 307 × 18548041 × 14336319007<11> × 52199445855916417782051565914997057406084296215486754691843753923<65> × 143798195172461138521036839345269251740737334259640879028155379795667047030720519999127<87> × 1242243875344012631795817324418173757359851856998521747162650254894096920984294021334129389<91> |