GMP-ECM 7.0.4-dev [configured with GMP 6.1.1, --enable-asm-redc] [ECM]
Input number is Phi(23376,10)/2054516641 (7767 digits)
Using B1=40000, B2=10672212, polynomial x^2, sigma=1:3136736902
Step 1 took 123344ms
Step 2 took 29281ms
********** Factor found in step 2: 352167180406222265569
Found prime factor of 21 digits: 352167180406222265569
Composite cofactor (Phi(23376,10)/2054516641)/352167180406222265569 has 7747 digits