The maximum number of particles in a Run in Geant4

I want to simulate the process of 3*10^9 neutron incident on the target material, but I meet the problem: “can’t find the random number, core dump”.
So, I want to know What the maximum number of particles in a Run in Geant4 is ?
Thank you.

" The number of events is stored in a signed integer (G4int), with a maximum value of 2,147,483,647"

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Thank you for your reply, :wink: . It is helpful for me.