Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 153: | \[{7^{153}-1\over6}\] | 32 × 19 × 37 × 103 × 307 × 613 × 1063 × 4591 × 14009 × 44371 × 365773 × 2316281689 × 2767631689 × 10879733611<11> × 44072862804091655188147<23> × 795000162131334968169163150985614882079420233<45> |