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A032627
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Primes that are concatenations of n with n + 4.
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0
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37, 59, 1721, 2731, 3539, 3943, 4549, 4751, 6367, 6569, 8387, 9397, 99103, 113117, 123127, 147151, 149153, 173177, 185189, 203207, 209213, 213217, 219223, 227231, 239243, 249253, 255259, 263267, 267271, 285289, 287291
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