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A155509
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Larger of emirps (pairs) with digits 1 and 9 only.
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2
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991, 99119, 191911, 911111, 919111, 999199, 1911911, 1991911, 9111911, 11911111, 19911191, 19919111, 19991911, 99111119, 911111191, 991111111, 991991111, 999199991, 999919919, 1911119911, 1919991191, 1991111911, 1991919191
(list; graph; refs; listen; history; internal format)
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