Factor Info
| ID | 866 |
| Size | 143 digits / 473 bits |
| Status | composite |
| Value | 21121476716451692370747521608893178640628727137816056691643722946957059090958895590803181486661292226591946547745792571721707171454661406903549 |
Factorizations
| Primary | (ID: 211) 3955434352527379623598597 (proven prime) |
| (ID: 9386) 5339862789773222241209064961232668533812215355046098896440567063277349806995061356228614637701299408266446092421464217 (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.