I gathered a few statistics:
 Sieving yields a factor each 552 seconds
 An llr test takes 735 seconds for the range 1.3M > 1.4M (which I am currently busy testing)
 A P1 test takes 30 minutes, with bounds B1 = 1M
 An ECM test takes 30 minutes for each curve, with bounds B1 = 1M
For the moment, I will complete the range 1.3M > 1.4M
Kind regards,
Valerie
