Factor Info
| ID | 19919 |
| Size | 139 digits / 459 bits |
| Status | composite |
| Value | 1250243975258996551733844833705559905898931694818915023327915733722941054255104414024855314094644572652689036412191163220226552098286385631 |
Factorizations
| Primary | (ID: 2186) 900900900900900900900900900900990990990990990990990990990991 (proven prime) |
| (ID: 19920) 1387770812537486172424567765413032718466560432631753219117445147282909788805041 (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.