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2014-10-22T19:21:03+03:00
N= 3^27 ·2^55 /2 - 2^24 ·2·2^27 ·3^27 = 3^27 ·2^54 - 2^52 ·3^27 =3^27 ·2^52 (4-1) = 3^28 · 2^52 = (3^14 ·2^26)²