Factor Info
| ID | 19890 |
| Size | 169 digits / 561 bits |
| Status | composite |
| Value | 4005430780893263121589279709015553611781785016143687781108945929113909751841944333450814981753652838146794746397483649972206169739128942654281175264414541268678524828363 |
Factorizations
| Primary | (ID: 19361) 26384856922809741239246281240888980994567902544116187 (proven prime) |
| (ID: 19891) 151807940160955100289170429893165038793034663531901428688094903246223551493368262682636457119977722392253174952029649 (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.