Factor Info

ID 57991
Size 253 digits / 840 bits
Status composite
Value 3681211274856859781384694942571956313433605570465785039466610192207833651481435693295214442547649663711077233074025828194240268686639330436242830818137790850012232118402440235063804236313655586214034056968446528331936614265706471727038799047281765935901

Factorizations

Primary (ID: 81291) 271778579253527583824013949209046157878351 (proven prime)
(ID: 81871) 13544891157234493646873404066079115783817191618648789374766640416369941409825376502264340976247697058105450366483698582018908239460025629688854581031019733574996955119871029467290779433557758782592359191495140051 (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.