Twenty different positive integers are written in a 4 X 5 table. Any two neighbours (numbers in cells with a common side) have a common divisor greater than 1. If n is the largest number in the table, find the smallest possible value of n.

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- Aug 25th 2012, 11:00 PMu2_waTricky Integer Table
Twenty different positive integers are written in a 4 X 5 table. Any two neighbours (numbers in cells with a common side) have a common divisor greater than 1. If n is the largest number in the table, find the smallest possible value of n.

- Aug 26th 2012, 06:36 PMVlasevRe: 4x5 integer table
I present you with the following solution.

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