Base 21 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
95: | \[{21^{95}-1\over20}\] | 5 × 40841 × 12061389013<11> × 19449969211<11> × 54921106624003<14> × 619598441951897251<18> × 2522688573446019221<19> × 4962575794097659196896553056277931780683391554141<49> |