Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
287: | \[{5^{287}-1\over4}\] | 19531 × 10690751 × 203375089 × 2238236249 × 5079304643216687969<19> × 1038891585945814650631<22> × 200456612648502497143478864083019776355872078643714969425922111151726966764329055421646037788009839817261530990040185377073764266169<132> |