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+ The first case of 4 sexy prime quadruplets (p, p + 6, p + 12, p + 18) as closely together as admissible is 2327074306453592351 + n, for n = 0, 6, 12, 18; 50, 56, 62, 68; 90, 96, 102, 108; 120, 126, 132, 138. [Andersen]




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