Factor Info

ID 21872
Size 319 digits / 1058 bits
Status composite
Value 1711981909695149163881537961955348706697813122232241813724140278911414521380085828052403757526821673674701617953603063239452995666424162745000157414557033258523387276469463799247878700993487399411812850693663738908391677700142541032081883166541077885874283906777773370710097841305920934458660368263925814928851653596239

Factorizations

Primary (ID: 21873) 42555528171653758816503341 (proven prime)
(ID: 21874) 40229365801538810874190241730328113584094334584711873111020247818251622956476946913304763998130489413726014162443327917877354835972587484883234883995726910074163092283871052067780411453789849066257091436951836788897162894316016017080922732674154882031771062520485459915193061813459619534630379 (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.