Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 546: | \[{20^{546}-1\over19}\] | 32 × 72 × 29 × 43 × 71 × 79 × 127 × 421 × 547 × 827 × 1171 × 2081 × 2549 × 3121 × 10529 × 32719 × 142559 × 460951 × 1340743 × 2750161 × 9690539 × 36363727 × 571945141 × 735408649 × 8442733531<10> × 22969682841393367<17> × 1296621829750174201<19> × 172311318287603732461390609<27> × 104933918101562798067516186656513621<36> × 177268114816140734272058490497131681<36> × 42753079684768103157355121804168940801106384712792554767161<59> × 4958484803139311161399834163296914058796099757037538045383101802044561817632686079973120000021<94> × [219061676887457904067300328415412485333872135831306140700131840306376969076998580991409405105555118116722814267019159313248732068707038474250545785983<150>] × 18102066280681629086435560861714306987902359207503451153309865612516692198843609395347384147887744153973812244720840668815536684083974856521587674043727343498213963102221<170> |