GMP-ECM 7.0.4-dev [configured with GMP 6.1.1, --enable-asm-redc] [ECM]
Input number is Phi(17186,10)/4990505053/195980551001 (7900 digits)
Using B1=50000, B2=15446350, polynomial x^2, sigma=1:3627592131
Step 1 took 108701ms
Step 2 took 24055ms
********** Factor found in step 2: 24415412859491394447331
Found prime factor of 23 digits: 24415412859491394447331
Composite cofactor (Phi(17186,10)/4990505053/195980551001)/24415412859491394447331 has 7877 digits

GMP-ECM 7.0.4-dev [configured with GMP 6.1.1, --enable-asm-redc] [ECM]
Input number is Phi(17186,10)/4990505053/195980551001/24415412859491394447331 (7877 digits)
Using B1=250000, B2=183032866, polynomial Dickson(3), sigma=1:1624146151
Step 1 took 563272ms
Step 2 took 110387ms
********** Factor found in step 2: 288415103445712439279085419
Found prime factor of 27 digits: 288415103445712439279085419
Composite cofactor (Phi(17186,10)/4990505053/195980551001/24415412859491394447331)/288415103445712439279085419 has 7851 digits