Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 294: | \[{20^{294}-1\over19}\] | 32 × 73 × 29 × 43 × 71 × 127 × 421 × 827 × 883 × 1471 × 10529 × 32719 × 460951 × 2750161 × 36363727 × 269737651 × 8442733531<10> × 2488859795549<13> × 399183749354915560790107963<27> × 9293953441663713774978397259701<31> × 6551154092925933298930251891324599<34> × 5904533446342503800755221573474491858998357053469<49> × 628292358238289452269193508271835428805485714102857143<54> × 13149431066432694799534977107679246791059834401228556359210092801566281439371614848468492182188987082746431<107> |