Factor Info

ID 21664
Size 417 digits / 1385 bits
Status composite
Value 721902455340570083960815188245465959451021679140750285645774505090352909406668433307901267283136478410457297336067392155686494969928150183641828808781589769542036798883285405835356942050815200795907598975982294748957873642834912601483473390455208169932731685880882277110092190289358402013802914538752443697368890105173566995890942272297613316144846666065014272838088843969744273179183466636573777799889731692041088393

Factorizations

Primary (ID: 21665) 85873160400449918797155817 (proven prime)
(ID: 21666) 8406613334994804623505859398625199309607804693299383085655353769741038606373680989598833080647921210868257030752014170513862880295749701238540319596391534085373515114602195530150223283266039720672697342726125568549790801046498959201695381930100327075051436435868804514756054563948754117157763153232231835035415169313858674318431005092986801570536283735575044154944272924156914663269062164129 (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.