Factor Info
| ID | 81561 |
| Size | 186 digits / 616 bits |
| Status | composite |
| Value | 261562445929559867826361881916827402723988248756882866683481875356467131691801659857315692100801668670388930551771023943258649577249158273106981976616622836313722952013780995693012667913 |
Factorizations
| Primary | (ID: 81131) 195170541036876871586242124250099044769031 (proven prime) |
| (ID: 81562) 1340173801537694413850143434823324197881944734408123969318183615732873352818387547792256202915481750393981539840410507800551300433878515806554223 (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.