Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 309: | \[{19^{309}-1\over18}\] | 3 × 127 × 5563 × 25339 × 315181 × 1163077 × 206553581947<12> × 405834978467<12> × 1136629356060574883918153527<28> × 2781054154752782883032125779881884379761516802550397017190960448523488191754317061752510502291353191102716115805637<115> × [1452739231114346768626957385213444637959636805103657367776983443363723391954831088747273650108051784281603739988353809131095056834009076140846598002633456627831225718820481178113981375549689045335870663905799<208>] |