Factor Info

ID 171957
Size 386 digits / 1280 bits
Status composite
Value 16901599467517506019433196347740725936471624536458740880306866831311674881060130039000702207345165057054757597740288285209601982361907567551328958172227927291473052661618198061507366306709577452578476712006152740872423121880996790259278893339093105628313979947965868543076792163012491096364207193181721864823407880659524374683504058398551229992616435632267463546702461462257110272011641

Factorizations

Primary (ID: 171405) 25898991752226259010080981501581857120780143806252217139641 (proven prime)
(ID: 171958) 652596812617798393074228177974626394514106858115065541614891988494993020911753706149265581870469752605712762505806633721606590725806163008693048438331700729089376261658819766009689306172595604095072232697777046408725676384439642517261139395524567315291314742048557776441901554259301881108158341427707955931148873431020291992001 (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.