Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 351: | \[{28^{351}-1\over27}\] | 33 × 192 × 53 × 271 × 541 × 1483 × 1951 × 444979 × 589681 × 786241 × 29572453 × 219386077 × 360548139979<12> × 4543753614603737<16> × 81923931656777716741<20> × 68948693997660959163751<23> × 2441437589227959094240729<25> × 178135134528413184980284396604535851624652223234840956388261926510811<69> × [281238386607288154778421748658441736616935258491019677158338744878231699680802706498653561611314038375812700444017867375433011651859615540655522280082703009387121216854239072528219086982350181473667526948014043863608744866980485898274126876264779124628720392027747290296309523642939651346977917<294>] |