Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 328: | \[{20^{328}-1\over19}\] | 3 × 7 × 83 × 401 × 739 × 1723 × 22961 × 25913 × 160001 × 49654937 × 824754607 × 35641617587<11> × 364984924121<12> × 42728337802653649<17> × 788985829969499330639<21> × 2490949949323610858879377601<28> × 19850094536448035972954342201<29> × 10849375510128706867296356739779929993<38> × 34480963211307643364750006697554452205828161<44> × 7732578673101466228198193653068929288547568250635199081804327533729957256969<76> × 1322335121354627572195016634013566909990083839869399632471834083383194688480149749323658531036078119635287203257<112> |