Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 160: | \[{22^{160}-1\over21}\] | 52 × 17 × 23 × 41 × 73 × 97 × 181 × 401 × 449 × 3209 × 150901 × 180001 × 224071 × 245411 × 2310689 × 305490121 × 3227992561 × 240425214401<12> × 2902518892577<13> × 117040234821177281<18> × 9621842168443061282218081<25> × 77480176584773759239954241<26> × 47480843551251539770871336049108426721825406598503314561<56> |