Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 215: | \[{22^{215}-1\over21}\] | 173 × 431 × 947 × 1291 × 245411 × 2732221 × 259799207 × 448254361 × 13302304902550013539783198271<29> × 5928189493969854971555424440437874917187171<43> × 354353165977601583921218290796305589218347406746145719454722449611324688063620917083028367026317871549744469998597529913593976177224423485457827202241567551095969046426968336781<177> |