Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 225: | \[{10^{225}-1\over9}\] | 32 × 31 × 37 × 41 × 151 × 271 × 4201 × 21401 × 25601 × 238681 × 333667 × 2906161 × 2002877551 × 182521213001<12> × 2636899200194401<16> × 4185502830133110721<19> × 97671987485517534751<20> × 15763985553739191709164170940063151<35> × 125899659866627764313267482289910001<36> × 15397758037201072346990165180076989140801<41> |