Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 468: | \[{20^{468}-1\over19}\] | 33 × 7 × 132 × 37 × 53 × 79 × 127 × 157 × 307 × 401 × 421 × 1171 × 2081 × 2549 × 3121 × 12277 × 24877 × 69481 × 142559 × 363871 × 502321 × 1340743 × 9690539 × 15359527 × 31711447 × 64008001 × 571945141 × 735408649 × 4450002049<10> × 670533425797<12> × 991874650911769<15> × 22969682841393367<17> × 278330926147861118689<21> × 106896982629956973639277<24> × 628605693732325702045277<24> × 1928835910218750775722169<25> × 172311318287603732461390609<27> × 50676846610970769808122928009<29> × 80815302106942219149388558933<29> × 29839792079207305068548741665705081<35> × 34838432418391303086607495276007140943047729735536037126561<59> × 256063908633871845537541706060016525021086384110684477035559<60> × 9323375969299946916265546012212837521616246578252110626605273783584648102282000095354341123315835780807070573<109> |