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Problems & Puzzles:
Puzzles
Problem 93.
A couple of SG 3x3
magic squares composed only by distinct palprimes
Around January of the year
2001, my friend Jaime Ayala constructed the following
pair of 3x3 magic squares, composed by 18 distinct
integes palindromic & Sophie Germain-alike from one
square to the other, but only a few (4) of them being
primes. This was the starting point of my
puzzle 124.
Here is the pair of SG alike 3x3 magic squares,
gotten by Jaime Ayala
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Palindromic but not all primes in a
Sophie-Germain-alike pair of Magic Squares, by
Jaime Ayala, January 2001 |
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252 |
171 |
363 |
--> |
505 |
343 |
727* |
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373* |
262 |
151* |
2.n+1 |
747 |
525 |
303 |
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161 |
353* |
272 |
--> |
323 |
707 |
545 |
The 18 integers are palindromes but only 4
of these integers are primes*.
Very optimistic we
posed the following only & apparently simple question:
Can
you produce one of this type of pairs of Magic squares
(SG alike) , but using exclusively
(distinct) palindromic
prime numbers?
...
The response of our readers
was a noisy silence... Until just 25 years later,
exactly the past May 15, 2026,
Arina Bator one young Polish student of the Jagiellonian
University in
Cracovia, sent an almost solution to this old puzzle:
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Almost Palprime &
SG Magic Squares by Arina Bator, May 2026 |
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1925356557556535291 |
1529480708070849251 |
1727253646463527271 |
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1529260726270629251 |
1727363637363637271 |
1925466548456645291 |
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1727473628263747271 |
1925246566656425291 |
1529370717170739251 |
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3850713115113070583 |
3058961416141698503 |
3454507292927054543 |
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3058521452541258503 |
3454727274727274543 |
3850933096913290583 |
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3454947256527494543 |
3850493133312850583 |
3058741434341478503 |
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Qualification =13/18 |
72.22% |
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Fails = 5 integers |
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Integers that are Palindromes but not Primes |
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Integers are neither Primes nor Palindromes |
We have learned that each
puzzle finds out finally his appropriate puzzler.
Arina Bator will be known as the first
producer of a
good near-miss solution of this puzzle.
Q. Can you
produce a complete solution to this puzzle or at least a
solution with greater Qualification than 72.22%?
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