c:\test>859242-2 -T=1 -N=250
With 1 threads took 87.819000 seconds
78267011685.3423

c:\test>859242-2 -T=2 -N=250
With 2 threads took 43.342000 seconds
78267011685.3423

c:\test>859242-2 -T=3 -N=250
With 3 threads took 29.350000 seconds
78267011685.3423

c:\test>859242-2 -T=4 -N=250
With 4 threads took 23.113000 seconds
78267011685.3423