Factor Info

ID 21216
Size 451 digits / 1498 bits
Status composite
Value 7976974148420637481075980619958038175257220160520757141569293626119898350155763953111413463798695776504850827902295256307531345037212426252684798240311365582595756137152330568529298512592136641801236347965598395689178258249971838593399383551396078543448431153786336706944832394458419072388832789357571551207810969734620326625183653313093010496689280270752540896807102522350159174095931042166047883236818512871141112742528208609979139861019636963155731

Factorizations

Primary (ID: 16672) 374962321852666418369 (proven prime)
(ID: 21217) 21274068575762186047606486088610464828406348464200139796067713715207504346580260085070850208612941356102704640480301192703885346271983507528291820944656545053438587227016249160592223415070718008379912836391657574678538733329776541239355126548084063204939587841152389051406484963773205672013324221428570275136408899777536999892891367967726525642161920764764249953418653331607686924465019437656475136610607259218652625127227429618899 (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.