Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
94: | \[{20^{94}-1\over19}\] | 3 × 7 × 1129 × 4889 × 6863 × 64109 × 790551835729<12> × 1930941642781<13> × 87910897915022054334374219609<29> × 1523201995370741149853911341808474202883334149728543<52> |