Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 355: | \[{19^{355}-1\over18}\] | 151 × 911 × 17041 × 49417 × 16202911 × 19840332702980239<17> × 1367953340395774788360889<25> × 15039779687938609372385845398208131004523<41> × [657558354265442722350808155744580937832851241180387920779544928067273002663340100491020022632591891870974942331387554526208475287959207105560639564743142592604337905357374268132887685463252524571272305948078735035438367634299777228409585271113978899709858800977982867832480690616102009379224279691027657591054397265062639878599947752423382207231929391<351>] |