Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 420: | \[{3^{420}-1\over2}\] | 23 × 52 × 72 × 112 × 13 × 29 × 31 × 43 × 61 × 71 × 73 × 211 × 271 × 421 × 547 × 1051 × 1093 × 1181 × 2269 × 2857 × 4201 × 4561 × 6301 × 16493 × 24151 × 368089 × 1616161 × 3369031 × 3454081 × 28596961 × 32839661 × 47763361 × 94373861 × 109688713 × 2664097031 × 7035101641<10> × 26751945361<11> × 374857981681<12> × 871383685710721<15> × 222665666643176401<18> |