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A155508
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Lesser of emirps (pairs) with digits 1 and 9 only.
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2
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199, 91199, 111119, 111919, 119191, 991999, 1191119, 1191191, 1191991, 11111911, 11191991, 11919991, 19111991, 91111199, 111111199, 111199199, 191111119, 199991999, 919919999, 1111111999, 1191111991, 1199111191, 1911199999
(list; graph; refs; listen; history; internal format)
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