Factor Info
| ID | 42397 |
| Size | 120 digits / 398 bits |
| Status | composite |
| Value | 641240739199608428261144780961661412780632857361505553708770529431866721300339015221493364737515959449607955001361952081 |
Factorizations
| Primary | (ID: 131) 27653866239836258463881623092961 (proven prime) |
| (ID: 42398) 23188104463884370191621155405927136505883116267190483711206063697597584791047444047735921 (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.