Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
113: | \[{18^{113}-1\over17}\] | 987640793 × 172438769983<12> × 2421643556857230748801093736803322118530010960526216366672882102828558542550258099313293778604340399952135049650486255129<121> |