Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 378: | \[{20^{378}-1\over19}\] | 34 × 72 × 29 × 43 × 71 × 109 × 127 × 307 × 379 × 421 × 827 × 2269 × 4483 × 6679 × 10529 × 17389 × 32719 × 47251 × 69481 × 460951 × 2750161 × 36363727 × 64008001 × 99672121 × 879338701 × 1794112741 × 8442733531<10> × 298114935351301<15> × 554814907753599944037466111<27> × 10287600958458182504983419994609358363826919<44> × 68728066670457765494784262143995903488000008001<47> × 1665961023516181647873325621851203600249127447271<49> × 2113557135711189942061990326567815218998730715777281<52> × 1127461580188303176887898738308935621942051025338796941<55> × 67669200162924114366478386952384549660668102404625226910635950789656573849487159112309<86> |