GMP-ECM 7.0.4-dev [configured with MPIR 2.7.2, --enable-openmp] [ECM]
Input number is Phi(21560,10)/826719071319630721 (6703 digits)
Using B1=20000, B2=3726670, polynomial x^1, sigma=0:8389940386577499658
Step 1 took 81168ms
Step 2 took 15771ms
********** Factor found in step 2: 47725688250392946641
Found probable prime factor of 20 digits: 47725688250392946641
Composite cofactor (Phi(21560,10)/826719071319630721)/47725688250392946641 has 6683 digits