Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 126: | \[{20^{126}-1\over19}\] | 33 × 72 × 29 × 43 × 71 × 127 × 307 × 421 × 827 × 6679 × 10529 × 32719 × 69481 × 460951 × 2750161 × 36363727 × 64008001 × 8442733531<10> × 10287600958458182504983419994609358363826919<44> × 68728066670457765494784262143995903488000008001<47> |