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A116197
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Numbers n such that n concatenated with n+5 gives the product of two numbers which differ by 9.
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4
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25, 2448207281, 2552334847, 9492271895, 10713024775597019390267617, 45251510049471045364918031, 99414584492459886818648287, 1000584180267191789271991959007645
(list; graph; refs; listen; history; internal format)
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