Factor Info

ID 31872
Size 640 digits / 2124 bits
Status composite
Value 1259339566342429327702200775240840593812399127279370638377273537349554645380110252229882721464068503787771285661208623045650150486499868252295749463774333815621839315287969527300232671875846046524992177912113258743370016294911415056334902338463251305523815206800822649742940952283041382618463868853170359221237695901042280628518780905058422032697039072130567603089437405346987699577534716914163568979460344145823372784662226578177289463076058170468174822433160197500463551051914558012756234031964829933409302391704338208554390244333132948040309950403469382390964896405753636138160657215330265964734576527791620885622595134919569691759639673

Factorizations

Primary (ID: 17129) 171074041901536300021132517497157303 (proven prime)
(ID: 31873) 7361371440953369165716191589043934704665307444700314225850905843591447765848541280332868356820081626683751128665044774035274489460225262911478321776633059330450035591436742754140213085305567598171312267621473044226903274319661444453923652834356908860029990205650375787378759203565861985478110302290653566447515601520104749173548589195028029435177497974381247853014750666926667348248017759426698522511168388166530854827482584471377668479327477809023973557355940614783683459286640838424898866038196502037225376591807470158020090524386092906033160063599050270438994275008544779249446610979836641410689971791 (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.