Base 21 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 410: | \[{21^{410}-1\over20}\] | 2 × 5 × 11 × 83 × 1231 × 16811 × 36901 × 40841 × 185641 × 1766117 × 5271781 × 14122861 × 83218931 × 1768026191 × 15302729711<11> × 17222085343<11> × 914531249431<12> × 52899783148909<14> × 6278288202391271612613401<25> × 33985282117517881270903492784746835442538163<44> × [201542641753996522014925354059517880562027893653202507591007360774926898794706752460018718778674703897965512330252977062012816937895255985030406814513068499628955621809081301<174>] × 11485067744219942708886592974523772674194839220685020253423476954547777123419460060388102679004871367799202337124266639742374928164453078749557472220999623096360348281702421577544673717017511<191> |