Factor Info

ID 21576
Size 512 digits / 1699 bits
Status composite
Value 17743435346043399139555613756543874407517740908358905010741506367834166627537668517990828227948545187556710764498568211750231916600970420751119182567785123238348510388427205785574103655373199335483257647013924319182209845655115998499245477073821664338370651379021910651902376474879787724566704860713258278592750587449770324509734301128343876261626208731950572531430657287274909063367031375570030451250389295459348777875289926820641695523158402527108851138901976973858546822326637482366504886333069082185457927129

Factorizations

Primary (ID: 21577) 645242881466809773505201 (proven prime)
(ID: 21578) 27498847109646248927227601796482074614757725321870305494765558729268340835284149134223627523876671279602043243282060585634446683805205769298987743621398475612229781393065930210337764594869329807347413142387485511901944701744148845434735273262743776399793498803530591215617633760331356280997145688842857549357524214224918621663066559049245489878026158466795254851661421195765603209809144613358351448073729031218211195778401567134525250729270982307018259437406078791809212981716068091516329 (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.