Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 201: | \[{18^{201}-1\over17}\] | 73 × 864167 × 2740105903681<13> × 14184594510552113<17> × 562081533912939823<18> × 10829165718047954727946216809876203820917671<44> × 1711804703700264011256484490955127927514387918787907145149607836981788637172343777017242775510927059954720486734509545216075751610031460151348655673319079<154> |