Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 375: | \[{20^{375}-1\over19}\] | 11 × 31 × 61 × 151 × 251 × 421 × 751 × 1451 × 3001 × 4751 × 11251 × 57751 × 261451 × 1369801 × 4613251 × 7466201 × 46794901 × 96749251 × 9958735751<10> × 3083052430282501<16> × 9308203137060768572251<22> × 10097787909487503899501<23> × 4080607191041244045302251<25> × 104988737576990732806404001<27> × 216782682017260961889408001<27> × 5368186389476275166937063030251<31> × 658548624454448615103649516836085460251<39> × 3020687095543366079924386027714341175374025501<46> × 1802120336049169884516730234718984138967643144643279704362096143251<67> × 4196563762259533891540092447005319252504217876611872401071757553938238528130401224501<85> |