Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 285: | \[{20^{285}-1\over19}\] | 11 × 19 × 31 × 61 × 191 × 229 × 251 × 421 × 571 × 761 × 3001 × 43891 × 261451 × 189137401 × 2741840791 × 40200668731<11> × 75368484119<11> × 192696104561<12> × 328942854011<12> × 1374892397251<13> × 1894266356321<13> × 64100641881631<14> × 161551654514044795591<21> × 59457999092908767491225521<26> × 207373637974370334920244263016739<33> × 444984286758526814664134323895596466447224796282843003256602431<63> × 8121794211159778616035643023999915636411588735418886858918889113913151530247828788253322870871<94> |