Factor Info
| ID | 16666 |
| Size | 188 digits / 623 bits |
| Status | composite |
| Value | 25684532729425871691361216754438382203520392153616272238402217943179271367251296447729762935931612530710757311722205288129646544254190035491666688796190592612409489655545763076884963375371 |
Factorizations
| Primary | (ID: 7464) 51349797354047205216257689 (proven prime) |
| (ID: 16667) 500187616171799941136149571074012617077680683795516109480428709223551989239343849780197949430244005801478788385111239930785955667766909043644188584368095347529539 (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.