Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
145: | \[{5^{145}-1\over4}\] | 11 × 59 × 71 × 35671 × 1461311 × 22125996444329<14> × 2158365113981511371558358567665231<34> × 488654500355218081336311051543759628081<39> |