Factor Info
| ID | 8557 |
| Size | 179 digits / 593 bits |
| Status | composite |
| Value | 20975478671741826294341652748091372391777782923518273831297050484130958762148150119165123100213711352705138279749487641485237428676579827828701788732154294996929151758946454454057 |
Factorizations
| Primary | (ID: 17966) 1620221568881364582821 (proven prime) |
| (ID: 18285) 12946055696705570158190436705475896472317676111149644719832199048305526088895587946448526396338275257946848788667956488941970907962669300088384685679095384117 (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.