GMP-ECM 7.0.4-dev [configured with GMP 6.1.1, --enable-asm-redc] [ECM]
Input number is Phi(15810,10)/313417441 (3832 digits)
Using B1=250000, B2=183032866, polynomial Dickson(3), sigma=1:2267521979
Step 1 took 190087ms
Step 2 took 40591ms
********** Factor found in step 2: 41798027067168641590081
Found prime factor of 23 digits: 41798027067168641590081
Composite cofactor (Phi(15810,10)/313417441)/41798027067168641590081 has 3809 digits