Hellenica World

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24

24 = 2*2*2*3

224 - 1 =  3 * 3 * 5 * 7 * 13 * 17 * 241

1024 - 1 =  3 * 3 * 3 * 7 * 11 * 13 * 37 * 73 * 101 * 137 * 9901 * 99990001

23 - 24 - 25

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