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5, 7, 47, 59, 67, 79, 89, 97, 449, 457, 467, 479, 487, 499, 547, 557, 569, 577, 587, 599, 647, 659, 677, 757, 769, 787, 797, 857, 859, 877, 887, 947, 967, 977, 997, 4447, 4457, 4547, 4549, 4567, 4597, 4649, 4657, 4679, 4759, 4787, 4789, 4799, 4877, 4889, 4957
(list; graph; refs; listen; history; internal format)
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