Factor Info
| ID | 143553 |
| Size | 178 digits / 589 bits |
| Status | composite |
| Value | 1581515640936573701661893733711798716897649229755198587994714241878298108980013373068485624249844984797297070274420628599789170099852122628980027490492700786963072458781743312033 |
Factorizations
| Primary | (ID: 143154) 1249075800768926003921653 (proven prime) |
| (ID: 143554) 1266148651637473945606424993961437857319454325377311123895947623952505032380576744200796343094724535741992063746666038382242164248514041199254672691310461 (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.