The composite cofactor of 2,1678L was the product of 98-digit and 99-digit prime numbers:

98-digit prime factor:
30272794384512209677765073884769649217487331772202558222369839609887445510428880293162252304800677

99-digit prime factor:
402788224397613186136219148252318339536265119697949266910596416970040949089174709766596653990270701

The factors will be reported to the Cunningham project and will be recorded on Page 113. The next number will finish in a few days. Let's keep going!