Factor Info
| ID | 42138 |
| Size | 143 digits / 473 bits |
| Status | composite |
| Value | 19773615084651290618659743989282125315353899844791742913239904990311256506761504640128941135287108482281090588771680729542584565299311578936659 |
Factorizations
| Primary | (ID: 1520) 54366683250988923781 (proven prime) |
| (ID: 42139) 363708321020146300917765461298494145774386261544586163043499217728607654080034167377510079573871270876604136831707757013239 (composite) |
Primary factorization keeps track of the smallest (known) prime factor. Secondary factorizations are old results kept when a new smaller prime factor is found, which occasionally happens with ECM.