Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 49: | \[{18^{49}-1\over17}\] | 449 × 80207 × 101921 × 32401295018849<14> × 15944803462923633762605952120076033<35> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 49: | \[{18^{49}-1\over17}\] | 449 × 80207 × 101921 × 32401295018849<14> × 15944803462923633762605952120076033<35> |