Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 343: | \[{8^{343}-1\over7}\] | 73 × 127 × 337 × 6073159 × 1428389887 × 62228099977<11> × 4432676798593<13> × 6896727944023<13> × 2714819157586383751<19> × 3274162442129276091367<22> × 2741672362528725535068727<25> × 5878920553871871291270984955318098156844648537<46> × 58961804474844164724814095915114338093146118248375213688557057<62> × 401566612311195594802501193435220042560698926924429408065263999053481174119481<78> |