Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
142: | \[{19^{142}-1\over18}\] | 22 × 5 × 17041 × 49417 × 2059828429 × 2666842361 × 19840332702980239<17> × 27801690183630617<17> × 1367953340395774788360889<25> × 15039779687938609372385845398208131004523<41> × 2025704439259099019362088408697885685939505089756810927<55> |