Factor Info

ID 20149
Size 258 digits / 856 bits
Status composite
Value 258648092974678093049685781364249712060010495939871560529990893000646361584343720554272517321016166281755196563497977501236984504651139331917148808265979214780600461893764434180138309481237279363477389113294848221419579712367801467931386868229401201213473393

Factorizations

Primary (ID: 19420) 1726290008991504500177463302688697 (proven prime)
(ID: 20150) 149828876739997957229352942808738661418192809302014686326979588082769377829928244684944306050092784673940322415525435501680463788493853025775656812104087878566086559606984379177460494405280433654409190720927574686237102158969 (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.