M 2 2 5 3 July 8, 2019 16 32 64 128 M =- 2 5 n 2 3 2 5 m 3 )= 2 3 5m M 2 m 2 3 4 5 1 5m 2 3 2 m 2 5 3 4m 2 )- 2 m 5 M 1 2 2 3m 5 6 M 2 5 306 7m 3 m 2 )= 2 3m 5 2 5 3 5 m=2