Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 585: | \[{20^{585}-1\over19}\] | 11 × 31 × 61 × 79 × 131 × 251 × 421 × 521 × 1171 × 2341 × 3001 × 3121 × 3511 × 4421 × 5851 × 53101 × 90481 × 142559 × 261451 × 363871 × 403261 × 9690539 × 64008001 × 4470064171<10> × 8097690511<10> × 12831155611<11> × 79083953101<11> × 144142570154831<15> × 3994611390415801<16> × 37217519646710509861<20> × 4329520082233745656921<22> × 172311318287603732461390609<27> × 50676846610970769808122928009<29> × 11477196436840183082171551292108543731<38> × 37728220072591903594777394062315785248115734924892661<53> × 256063908633871845537541706060016525021086384110684477035559<60> × 459089099925035783821052792061780585695713848071807365597327398077298952384700030494441865136448190330271086637295215073858346470079644364884239686440077070759466534157579541<174> × [9767948784595288045321867681964218708721313225496942661547528250440290857038927852882343755486787137461798941098002335181255009441180808895895671154041131863396453607423835662888845461<184>] |