Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 87: | \[{12^{87}-1\over11}\] | 59 × 157 × 349 × 1741 × 24767 × 368939 × 74233562929<11> × 936727604123432773<18> × 3335672988472972523<19> × 58989511024900847298035017<26> |