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@thejevans
Created September 30, 2020 21:41
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MPMP15: Prime Pairs Naive Solution
(1, 2, 3, 4, 7, 6, 5, 8, 9): [3, 5, 7, 11, 13, 11, 13, 17]
(1, 2, 3, 4, 9, 8, 5, 6, 7): [3, 5, 7, 13, 17, 13, 11, 13]
(1, 2, 3, 8, 5, 6, 7, 4, 9): [3, 5, 11, 13, 11, 13, 11, 13]
(1, 2, 3, 8, 9, 4, 7, 6, 5): [3, 5, 11, 17, 13, 11, 13, 11]
(1, 2, 5, 6, 7, 4, 3, 8, 9): [3, 7, 11, 13, 11, 7, 11, 17]
(1, 2, 5, 6, 7, 4, 9, 8, 3): [3, 7, 11, 13, 11, 13, 17, 11]
(1, 2, 9, 4, 3, 8, 5, 6, 7): [3, 11, 13, 7, 11, 13, 11, 13]
(1, 2, 9, 4, 7, 6, 5, 8, 3): [3, 11, 13, 11, 13, 11, 13, 11]
(1, 2, 9, 8, 3, 4, 7, 6, 5): [3, 11, 17, 11, 7, 11, 13, 11]
(1, 2, 9, 8, 5, 6, 7, 4, 3): [3, 11, 17, 13, 11, 13, 11, 7]
(1, 4, 3, 2, 9, 8, 5, 6, 7): [5, 7, 5, 11, 17, 13, 11, 13]
(1, 4, 3, 8, 9, 2, 5, 6, 7): [5, 7, 11, 17, 11, 7, 11, 13]
(1, 4, 7, 6, 5, 2, 3, 8, 9): [5, 11, 13, 11, 7, 5, 11, 17]
(1, 4, 7, 6, 5, 2, 9, 8, 3): [5, 11, 13, 11, 7, 11, 17, 11]
(1, 4, 7, 6, 5, 8, 3, 2, 9): [5, 11, 13, 11, 13, 11, 5, 11]
(1, 4, 7, 6, 5, 8, 9, 2, 3): [5, 11, 13, 11, 13, 17, 11, 5]
(1, 4, 9, 2, 3, 8, 5, 6, 7): [5, 13, 11, 5, 11, 13, 11, 13]
(1, 4, 9, 8, 3, 2, 5, 6, 7): [5, 13, 17, 11, 5, 7, 11, 13]
(1, 6, 5, 2, 3, 8, 9, 4, 7): [7, 11, 7, 5, 11, 17, 13, 11]
(1, 6, 5, 2, 9, 8, 3, 4, 7): [7, 11, 7, 11, 17, 11, 7, 11]
(1, 6, 5, 8, 3, 2, 9, 4, 7): [7, 11, 13, 11, 5, 11, 13, 11]
(1, 6, 5, 8, 9, 2, 3, 4, 7): [7, 11, 13, 17, 11, 5, 7, 11]
(1, 6, 7, 4, 3, 2, 5, 8, 9): [7, 13, 11, 7, 5, 7, 13, 17]
(1, 6, 7, 4, 3, 2, 9, 8, 5): [7, 13, 11, 7, 5, 11, 17, 13]
(1, 6, 7, 4, 3, 8, 5, 2, 9): [7, 13, 11, 7, 11, 13, 7, 11]
(1, 6, 7, 4, 3, 8, 9, 2, 5): [7, 13, 11, 7, 11, 17, 11, 7]
(1, 6, 7, 4, 9, 2, 3, 8, 5): [7, 13, 11, 13, 11, 5, 11, 13]
(1, 6, 7, 4, 9, 2, 5, 8, 3): [7, 13, 11, 13, 11, 7, 13, 11]
(1, 6, 7, 4, 9, 8, 3, 2, 5): [7, 13, 11, 13, 17, 11, 5, 7]
(1, 6, 7, 4, 9, 8, 5, 2, 3): [7, 13, 11, 13, 17, 13, 7, 5]
(3, 2, 1, 4, 7, 6, 5, 8, 9): [5, 3, 5, 11, 13, 11, 13, 17]
(3, 2, 1, 4, 9, 8, 5, 6, 7): [5, 3, 5, 13, 17, 13, 11, 13]
(3, 2, 1, 6, 5, 8, 9, 4, 7): [5, 3, 7, 11, 13, 17, 13, 11]
(3, 2, 1, 6, 7, 4, 9, 8, 5): [5, 3, 7, 13, 11, 13, 17, 13]
(3, 2, 5, 8, 9, 4, 1, 6, 7): [5, 7, 13, 17, 13, 5, 7, 13]
(3, 2, 9, 8, 5, 6, 1, 4, 7): [5, 11, 17, 13, 11, 7, 5, 11]
(3, 4, 1, 2, 9, 8, 5, 6, 7): [7, 5, 3, 11, 17, 13, 11, 13]
(3, 4, 7, 6, 1, 2, 5, 8, 9): [7, 11, 13, 7, 3, 7, 13, 17]
(3, 4, 7, 6, 1, 2, 9, 8, 5): [7, 11, 13, 7, 3, 11, 17, 13]
(3, 4, 9, 8, 5, 2, 1, 6, 7): [7, 13, 17, 13, 7, 3, 7, 13]
(3, 8, 5, 2, 1, 6, 7, 4, 9): [11, 13, 7, 3, 7, 13, 11, 13]
(3, 8, 5, 2, 9, 4, 1, 6, 7): [11, 13, 7, 11, 13, 5, 7, 13]
(3, 8, 5, 6, 1, 2, 9, 4, 7): [11, 13, 11, 7, 3, 11, 13, 11]
(3, 8, 5, 6, 7, 4, 1, 2, 9): [11, 13, 11, 13, 11, 5, 3, 11]
(3, 8, 9, 2, 1, 4, 7, 6, 5): [11, 17, 11, 3, 5, 11, 13, 11]
(3, 8, 9, 2, 5, 6, 1, 4, 7): [11, 17, 11, 7, 11, 7, 5, 11]
(3, 8, 9, 4, 1, 2, 5, 6, 7): [11, 17, 13, 5, 3, 7, 11, 13]
(3, 8, 9, 4, 7, 6, 1, 2, 5): [11, 17, 13, 11, 13, 7, 3, 7]
(5, 2, 1, 6, 7, 4, 3, 8, 9): [7, 3, 7, 13, 11, 7, 11, 17]
(5, 2, 3, 8, 9, 4, 1, 6, 7): [7, 5, 11, 17, 13, 5, 7, 13]
(5, 2, 9, 8, 3, 4, 1, 6, 7): [7, 11, 17, 11, 7, 5, 7, 13]
(5, 6, 1, 2, 3, 8, 9, 4, 7): [11, 7, 3, 5, 11, 17, 13, 11]
(5, 6, 1, 2, 9, 8, 3, 4, 7): [11, 7, 3, 11, 17, 11, 7, 11]
(5, 6, 7, 4, 1, 2, 3, 8, 9): [11, 13, 11, 5, 3, 5, 11, 17]
(5, 8, 3, 2, 1, 6, 7, 4, 9): [13, 11, 5, 3, 7, 13, 11, 13]
(5, 8, 3, 2, 9, 4, 1, 6, 7): [13, 11, 5, 11, 13, 5, 7, 13]
(5, 8, 3, 4, 7, 6, 1, 2, 9): [13, 11, 7, 11, 13, 7, 3, 11]
(5, 8, 3, 4, 9, 2, 1, 6, 7): [13, 11, 7, 13, 11, 3, 7, 13]
(5, 8, 9, 2, 3, 4, 1, 6, 7): [13, 17, 11, 5, 7, 5, 7, 13]
(5, 8, 9, 4, 3, 2, 1, 6, 7): [13, 17, 13, 7, 5, 3, 7, 13]
(7, 4, 1, 6, 5, 2, 3, 8, 9): [11, 5, 7, 11, 7, 5, 11, 17]
(7, 4, 1, 6, 5, 8, 3, 2, 9): [11, 5, 7, 11, 13, 11, 5, 11]
(7, 4, 3, 2, 1, 6, 5, 8, 9): [11, 7, 5, 3, 7, 11, 13, 17]
(7, 4, 3, 8, 5, 6, 1, 2, 9): [11, 7, 11, 13, 11, 7, 3, 11]
(7, 6, 1, 2, 5, 8, 3, 4, 9): [13, 7, 3, 7, 13, 11, 7, 13]
(7, 6, 1, 4, 3, 2, 5, 8, 9): [13, 7, 5, 7, 5, 7, 13, 17]
(7, 6, 1, 4, 3, 8, 5, 2, 9): [13, 7, 5, 7, 11, 13, 7, 11]
(7, 6, 5, 2, 1, 4, 3, 8, 9): [13, 11, 7, 3, 5, 7, 11, 17]
(7, 6, 5, 8, 3, 2, 1, 4, 9): [13, 11, 13, 11, 5, 3, 5, 13]
(7, 6, 5, 8, 3, 4, 1, 2, 9): [13, 11, 13, 11, 7, 5, 3, 11]
there are 70 solutions not including mirrored permutations
from itertools import permutations
primes = set([2, 3, 5, 7, 11, 13, 17])
def pair_sums(permutation):
sums = []
for i in range(len(permutation) - 1):
sums.append(sum(permutation[i:i+2]))
return sums
count = 0
for permutation in permutations(range(1,10)):
if permutation[0] > permutation[-1]:
continue
sums = pair_sums(permutation)
if set(sums).issubset(primes):
print(f'{permutation}: {sums}')
count += 1
print(f'there are {count} solutions not including mirrored permutations')
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