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A122712
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Least prime P of a quartet of 4 different primes with 2 pairs of twin primes, the first pair of twin primes P and P+2, the second one Q and Q+2 with Q such that all digits are the same as P if not 6 or 9 and if 6 then replace by 9 if 9 replace by 6.
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0
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1061, 14561, 16691, 36341, 55631, 62981, 64151, 68711, 76961, 100361, 106451, 115601, 136991, 155861, 167861, 205661, 207671, 241361
(list; graph; refs; listen; history; internal format)
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