Factor Info
| ID | 3991 |
| Size | 168 digits / 555 bits |
| Status | composite |
| Value | 106241281528360112748466251744526726654774954155853681787323316669960079376600198943731254004043100394274227984997228173737489576784009093725279143968691219959268307383 |
Factorizations
| Primary | (ID: 11098) 1905976815426273605733466333451 (proven prime) |
| (ID: 11099) 55741119550081801351939671762738192292872835581278328641380827887156714278887164240744093584025177097208831865012599193258808992473478533 (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.