Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 220: | \[{12^{220}-1\over11}\] | 52 × 11 × 13 × 23 × 29 × 331 × 2377 × 3697 × 5281 × 6271 × 6337 × 19141 × 22621 × 85403261 × 266981089 × 57154490053<11> × 68368660537<11> × 190966927558661<15> × 442434513819541<15> × 164018234982236911<18> × 46768482029635739671<20> × 5766308324790114380136001<25> × 1139061132901522607146029344764531527911907221461192210036964536151488541<73> |