Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 481: | \[{8^{481}-1\over7}\] | 79 × 223 × 2887 × 8191 × 14431 × 121369 × 321679 × 346321 × 26295457 × 319020217 × 616318177 × 138724733805016586033<21> × 5800976318060644948970424014255729<34> × 6891696701907972189990423390011944079746042979076780671011284119842734575263<76> × 6968569174905996222436387064859938269995699066700552923985092729251226620174737<79> × 2140600545454641512856467030227209389793604031414644129291058713533369823748356845964110915689862671594944748596052860967052565483096919673526501585738415412539566738879<169> |