Factor Info

ID 172178
Size 469 digits / 1555 bits
Status composite
Value 1019613667130298999506965265455122018059233342588457048734350171889960997902189918150708060538433781007320972023265747625315814491991010883042430135044202712600972460269187202971682503108234368941656161416372750568048861951362012149102916290121786976333199263575870391012394827985124688390446686642784626380022620495106991392091025108423637754539804744021838000311016757646537725599965867024370700721460916718123861907326275185717033165800572094635729438605479036883637

Factorizations

Primary (ID: 171380) 1575850427038837744926591856538221047697 (proven prime)
(ID: 172179) 647024393708635921918512459646301833381142434682581967412313809281217021591928763378524821362482673969202296719182156591897755824070439166157367250947888797796132405105709909243934982127607342938951832942973555253018451965054794458617206355951899643374005426776718714523845576268748719200667612405958732496973633184851076298841487246633912274467096061045284932309197869025006927330215441710841322193180378588750434525258187106021 (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.