The composite cofactor of 11,263+ was the product of 78-digit and 174-digit prime numbers:

78-digit prime factor:
210640539930623624602106587607081793739730821592568905135250446091480582291131

174-digit prime factor:
531571924777943437652138715288074885659807496741943569212972687198265247581932451775916625204788296\
541393839387407992649120112699839269799777165955687136134130809637836355849

The factors will be reported to the Cunningham project and will be recorded on Page 122.