#!/usr/bin/env python3
import subprocess,time
N=10**18
m=1000
t=time.time()
s='\n'.join(map(str,range(N,N+m)))+'\n'
r=subprocess.run(['/usr/bin/factor'],input=s,text=True,capture_output=True)
print(m,time.time()-t,len(r.stdout),r.returncode,r.stderr[:100])