Factor Info
| ID | 3871 |
| Size | 198 digits / 656 bits |
| Status | composite |
| Value | 257059148280601378127888621155723486206235882736507210753785394700633365332540929171074005997412813839596751463845098703644890295478143590673397247064661058063270052229679911685398972917998447337187 |
Factorizations
| Primary | (ID: 10921) 3178641606717935496778334833 (proven prime) |
| (ID: 10922) 80870755525667586723436726938021340585658913154358870798822256989837430926597085588060973825368039635660638140305086939502275073610694231397499237478714443101494935713939 (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.