Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 570: | \[{20^{570}-1\over19}\] | 32 × 7 × 11 × 19 × 31 × 61 × 127 × 191 × 229 × 251 × 421 × 571 × 761 × 3001 × 6841 × 43891 × 152381 × 261451 × 597361 × 189137401 × 2741840791 × 26876632021<11> × 40200668731<11> × 75368484119<11> × 109850818001<12> × 192696104561<12> × 222155207347<12> × 328942854011<12> × 1374892397251<13> × 1894266356321<13> × 2272727294381<13> × 64100641881631<14> × 68465688966343<14> × 149829269355301<15> × 693371183978144761<18> × 161551654514044795591<21> × 59457999092908767491225521<26> × 207373637974370334920244263016739<33> × 948097092910206388651766804512177141<36> × 5229931928455690333627616430173530402650634066903222987681<58> × 444984286758526814664134323895596466447224796282843003256602431<63> × 8121794211159778616035643023999915636411588735418886858918889113913151530247828788253322870871<94> × [237329087077134540607445111690116798709108238733176794477600814730372369215203128704631856502849458453692580602704472729695468579663629024367063385747961547982529936521<168>] |