Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 123: | \[{28^{123}-1\over27}\] | 3 × 83 × 271 × 821 × 10333 × 801469 × 32512427 × 763210858591<12> × 4495294535482012470972518309284152114589<40> × 7535061144448219855718938274686920931447<40> × 961413627223934919442298688103103843727336437853883723949761<60> |