Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
159: | \[{5^{159}-1\over4}\] | 31 × 5960555749<10> × 17154094481<11> × 1775305720077559<16> × 27145365052629449<17> × 2239678151546732477719339309862512328008393109037131818519<58> |