The composite cofactor of L1797 was the product of 72-digit and 115-digit prime numbers:

72-digit prime factor:
115572226500235812173405687747307421036194184091935075427559386288657821

115-digit prime factor:
1964973868352645806766715854071709932346869927573781964969130047495116196018842232437285205604358176300060547006329

The factors have been reported to the Fibonacci project.