Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
179: | \[{20^{179}-1\over19}\] | 359 × 163511471891<12> × 1310869322467719741049550921<28> × 16049289462454249413387174880631<32> × 468350831182812515219466778452660561070780573236535155859<57> × 6972466575318973421040237825685690956116285040234519545478525864054207775464395317280133298214626377301<103> |