Factor Info
| ID | 13666 |
| Size | 80 digits / 265 bits |
| Status | composite |
| Value | 42773173243965044461440587436524994548809209000747853300785239135014215714233537 |
Factorizations
| Primary | (ID: 13667) 155251136815444024315833387060599471617 (proven prime) |
| (ID: 3129) 275509565477848842604777623828011666349761 (proven prime) |
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.