14組と15組は >>951 の2倍
M=23554, N=46010764800, [342,11200,12012] [350,9828,13376] [351,9728,13475] [396,7350,15808] [448,6006,17100] [456,5850,17248] [480,5434,17640] [490,5280,17784] [665,3584,19305] [770,3024,19760] [832,2772,19950] [924,2470,20160] [1080,2090,20384] [1200,1872,20482] [1274,1760,20520]