4593042024525125134486811 | 24737*2^6127+1
The 8th smallest unfactored n for k=24737.
Found using GMP-ECM 6.0.1 on an Apple Mac Mini (1.42GHz) with suggested bounds for 25 digits. It was the 6th curve out of the suggested 206!
Using B1=50000, B2=14000000, polynomial x^2, sigma=2555558430
Step 1 took 232468ms
Step 2 took 59168ms
********** Factor found in step 2: 4593042024525125134486811
Found probable prime factor of 25 digits: 4593042024525125134486811
Composite cofactor (24737*2^6127+1)/4593042024525125134486811 has 1825 digits
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