perplexus.info :: Numbers : DIY prime magic

DIY prime magic (Posted on 2012-01-13)

In a 4x4 magic square all rows, columns and the two main diagonals are distinct 4-digit prime numbers when read in either direction.

Create such a square.

Bonus (d4): same for order-5 magic square and 5-digit primes.

Based on L. E. Card,Patterns in Primes, JRM 1:2, 1968, pp .93-99,

Submitted by Ady TZIDON

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Solution: (Hide)

1 1 9 3
9 2 5 7
3 8 5 1
3 3 1 9
+ 7 related squares, created by symmetry or rotation.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re(4): From the computer -semi-spoiler	brianjn	2012-01-21 20:39:19
re(3): From the computer -semi-spoiler	Charlie	2012-01-21 11:02:43
re(2): From the computer -semi-spoiler	brianjn	2012-01-20 18:38:42
re: From the computer -semi-spoiler	brianjn	2012-01-19 08:11:29
Solution and Listing 4x4	brianjn	2012-01-14 20:06:09
re(2): From the computer -semi-spoiler	Ady TZIDON	2012-01-14 16:09:02
re(3): From the computer -semi-spoiler	Charlie	2012-01-14 11:31:56
re(2): From the computer -semi-spoiler	brianjn	2012-01-14 03:21:16
re: From the computer -semi-spoiler	Charlie	2012-01-13 23:33:57
From the computer -semi-spoiler	brianjn	2012-01-13 19:03:16

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