Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
86: | \[{12^{86}-1\over11}\] | 13 × 431 × 71209 × 12313309 × 372060253 × 10273420681<11> × 13444466603<11> × 7177727914895266742809<22> × 32359758358562524963364461<26> |