GMP-ECM 7.0.5 [configured with GMP 6.2.1, --enable-asm-redc] [ECM]
Input number is (10^258+7)/29/1257622944969436144187808787/2054652468153464138151137947 (203 digits)
Using B1=43000000, B2=240490660426, polynomial Dickson(12), sigma=1:3472696718
Step 1 took 77315ms
Step 2 took 27644ms
********** Factor found in step 2: 174875938823274617455459654971510118633849712347
Found prime factor of 48 digits: 174875938823274617455459654971510118633849712347
Prime cofactor ((10^258+7)/29/1257622944969436144187808787/2054652468153464138151137947)/174875938823274617455459654971510118633849712347 has 155 digits