Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 290: | \[{22^{290}-1\over21}\] | 23 × 59 × 224071 × 245411 × 428041 × 866231 × 88987603 × 120593021 × 2283673499 × 15141642169<11> × 2501713355621<13> × 64052303668365610463<20> × 202265163810559697475821<24> × 150560423001607231349602850772194465659430531629916868642461<60> × 18001171723457118771674501490553826057996241464348668499425833271403787573053626386421<86> × 10597803426234954340788303828684042779502181882631677588005736778386453583578546281240647751235953513817212714284433066197700311<128> |