Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 358: | \[{20^{358}-1\over19}\] | 3 × 7 × 359 × 41887 × 163511471891<12> × 985277968369<12> × 48482045183147832563<20> × 1310869322467719741049550921<28> × 16049289462454249413387174880631<32> × 518422974004205201549902366990259260636203742583689<51> × 468350831182812515219466778452660561070780573236535155859<57> × 1006202366625285168886342439832001769199774533814432679014821<61> × 3495919270114926276343791692848587967333671571817151233734274595156165101426931704741<85> × 6972466575318973421040237825685690956116285040234519545478525864054207775464395317280133298214626377301<103> |