Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 235: | \[{20^{235}-1\over19}\] | 11 × 61 × 251 × 1129 × 4889 × 28201 × 2590437431 × 790551835729<12> × 1930941642781<13> × 12435055792744161596491<23> × 87910897915022054334374219609<29> × 3570907310790606926498497128850688711072771837771<49> × 3025029944436087394616726666052552348851110911625740117751<58> × 23738284695573674144438598645151629739135537946779044030190169692608001556402094763852500508990141<98> |