Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
229: | \[{5^{229}-1\over4}\] | 2749 × 53129 × 63785116081353654247759<23> × 25703365361608909110896940589<29> × 12101947939303673324813381857141044766729906970667251641650660796379874056373395515095101692007273411<101> |