Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 504: | \[{20^{504}-1\over19}\] | 33 × 72 × 13 × 29 × 37 × 43 × 71 × 73 × 127 × 197 × 307 × 401 × 421 × 617 × 757 × 827 × 1009 × 6679 × 10529 × 12277 × 14561 × 24877 × 28393 × 31177 × 32719 × 69481 × 137089 × 160001 × 460951 × 821113 × 1464961 × 2750161 × 4468393 × 8651161 × 36363727 × 64008001 × 1424354653 × 4450002049<10> × 5417928377<10> × 8442733531<10> × 79350703489<11> × 175184754697<12> × 4020592025017<13> × 1327100500372993081<19> × 51433451961886233152209<23> × 56362086206010786883495213<26> × 10287600958458182504983419994609358363826919<44> × 68728066670457765494784262143995903488000008001<47> × 877698471034075399349291125081518130679129474975294881<54> × 281476735929260372880093767270416777215999344635904000000160001<63> × 110681938091087194101630131136545430031409977601478545340275397361<66> × 580939139475295695166384651132320160828843846806150617997753781870711714538550518093445317249552231429353<105> |