Repeatedly Appending Any Digit to Generate Composite Numbers
نویسندگان
چکیده
We investigate the problem of finding integers k such that appending any number of copies of the base-ten digit d to k yields a composite number. In particular, we prove that there exist infinitely many integers coprime to all digits such that repeatedly appending any digit yields a composite number.
منابع مشابه
Appending Digits to Generate an Infinite Sequence of Composite Numbers
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عنوان ژورنال:
- The American Mathematical Monthly
دوره 121 شماره
صفحات -
تاریخ انتشار 2014