Factor Info
| ID | 42021 |
| Size | 121 digits / 402 bits |
| Status | composite |
| Value | 8506427641411240880906202231905559273473487920140016639175049553681886442168668446161528945181629255358046383933098443007 |
Factorizations
| Primary | (ID: 447) 252395324361178683936108001 (proven prime) |
| (ID: 1478) 33702794070933382559008182547200094576121220521337955857937586764047982342697411091347349687007 (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.