Factor Info
| ID | 4021 |
| Size | 198 digits / 657 bits |
| Status | composite |
| Value | 381679698704553966814014033543096933462901028409874167964282383280198986693392767499849731009778624734164833985982081105876678657769424072454831248892855896046898670546156313272431570890048311692471 |
Factorizations
| Primary | (ID: 2923) 618970019642690137449562111 (proven prime) |
| (ID: 11141) 616636810495093737844615467705581452213400160787450904391011763826673943870185460933992265935140392646990915387096629405951928914628751002838786664006530215986433539666761 (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.