The composite cofactor of 2,1990L was the product of 109-digit and 126-digit prime numbers:

109-digit prime factor:
3196157464997773612433721580590936118959325501324570526400274738986155572480635187898763713197906567258456681

126-digit prime factor:
104004713758158600035311182213312327904176488578502499043611459097552735787578478180621737006571781199935237827937486688385041

The factors have been reported to the Cunningham project and have been recorded on Page 123.