Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
127: | \[{19^{127}-1\over18}\] | 145106952103<12> × 34039801625579289448874846062867<32> × 28363483963953449277736296991635431198533209859341145168323249644535566993254066864145019564038114261915111704674791041<119> |