雷劈数的雷劈数表

2022-12-27 03:04

2022-12-27 03:20

以下用x|y表示一个平方数N可以分割为x和y两部分,(x + y)^2 = N。
y是一位数:10x + y = (x + y)^2
N=0|0, 10|0, 0|1, 8|1
有意义的数只有9^2 = 81。
y是两位数:100x + y = (x + y)^2
0^2 = 0|00, 100^2 = 100|00
45^2 = 20|25, 55^2 = 30|25
99^2 = 98|01, 1^2 = 0|01
其中有意义的数是45^2=2025, 55^2=3025。
0|0...0, 0|0...1, 10...0|0...0这三种属于平凡解,下略。
根据上节的性质,雷劈数必然成对存在;但9..98|0...01是比较特殊的一类,与其成对的0|0...1属于平凡解。
y是三位数:1000x + y = (x + y)^2
297^2 = 88|209
703^2 = 494|209
999^2 = 998|001
y是四位数:10000x + y = (x + y)^2
2223^2 = 494|1729
7777^2 = 6048|1729
2728^2 = 744|1984
7272^2 = 5288|1984
4950^2 = 2450|2500
5050^2 = 2550|2500
9999^2 = 9998|0001
4879^2 = 238|04641
y是五位数:1000****x + y = (x + y)^2
95121^2 = 90480|04641
82656^2 = 68320|14336
17344^2 = 3008|14336
77778^2 = 60494|17284
22222^2 = 4938|17284
99999^2 = 99998|00001
y是六位数:1000****x + y = (x + y)^2
9947****^2 = 9894****|0052****, 5292^2 = 28|0052****
9610****^2 = 9235****|0374****, 38962^2 = 1518|0374****
8571****^2 = 7346****|1224****, 1428****^2 = 20408|1224****
8518****^2 = 7256****|1262****, 1481****^2 = 21948|1262****
8181****^2 = 6694****|1487****, 1818****^2 = 33058|1487****
8128****^2 = 6607****|1521****, 1871****^2 = 35010|1521****
7915****^2 = 6264****|1650****, 2084****^2 = 43470|1650****
6813****^2 = 4641****|2171****, 3186****^2 = 1015****|2171****
6700****^2 = 4489****|2210****, 3299****^2 = 1088****|2210****
6486****^2 = 4207****|2279****, 3513****^2 = 1234****|2279****
6433****^2 = 4139****|2294****, 3566****^2 = 1271****|2294****
6096****^2 = 3717****|2379****, 3903****^2 = 1523****|2379****
5384****^2 = 2899****|2485****, 4615****^2 = 2130****|2485****
5331****^2 = 2842****|2489****, 4668****^2 = 2179****|2489****
5005****^2 = 2505****|2500****, 4995****^2 = 2495****|2500****
9999****^2 = 9999****|0000****

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