Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 689: | \[{3^{689}-1\over2}\] | 107 × 24169 × 299027 × 797161 × 3747607031112307667<19> × 23592166751590360527440683737835798740484621759417217676978473409577259<71> × 6655542110224266466782906704388539876031493964211390667952854822969562839982865805775365958887727<97> × 75146765086727946840127914058917062764152309928075168868240577522713745423499830508278352694740409099001800766950040424487711<125> |