Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 465: | \[{20^{465}-1\over19}\] | 11 × 312 × 61 × 251 × 311 × 421 × 1489 × 2791 × 3001 × 4651 × 11161 × 19531 × 128341 × 214831 × 261451 × 766321 × 1646101 × 2387311 × 102567841 × 340037881769<12> × 581740080393079<15> × 48309707746869061391<20> × 1087505315388920334551<22> × 43031714486935028152741<23> × 340766350330083094031584693103221<33> × 58100863601440803285986596899425752397880191<44> × 16539256253433805647567703907730924950488428421711<50> × 2204671532539725204437991248517631768420285351501781<52> × 102034887942500981250204251687576732259634868692462628119891<60> × 735669815930822532937503688968508571966425959548932871142136554846387363229<75> × 346781713993060828894144804879529672344253606777815266559284530915629527842820598763192874714959478664829657996788346989317091<126> |