Factor Info

ID 28294
Size 644 digits / 2137 bits
Status composite
Value 16237933557245906612644936361208675687189212409404062431430698253154602998908317859072479503028121451659086509105084808758414571668448997895616299665892915143987973101079066222652166998403641340450993253085910588083074252473385422734237793858195455535058040861415196056333166407188876306793529148968567586744742691012308374418621233270843433616518530723093381287341404900914338088809080942916991531195942973989486294875091304832150820859859728811844425525733903899841888159791924769506940648493700270951978549387707320158694772231835074653744038426131354127194688941885969142881394982521668417134932815455894125934446564999374536564686187302153

Factorizations

Primary (ID: 20195) 2016492306990976282439501774196098215666169 (proven prime)
(ID: 40987) 8052564099030093982259061400161615902590260037276391179132868940724740422877866322785643423288039881186559446578704727244601097804587661093847173018648311693668228462765579455001329232513411394849184097236824571727271475204858415988586520923362626565965678662093295588449181659522556711180733430960991280476357972814239599244661819573273209645372017967973278794448858867538747724654412061143032994688705791590918018199625637806644766735415962934553555582583384433283993446206109277822580177174079327570290329643426903017509638896001028551849368848426520263797205274392431688294963990801908831640373137 (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.