e/Rough number

Information
has gloss	eng: A k-rough number, as defined by Finch in 2001 and 2003, is a positive integer whose prime factors are all greater than or equal to k. For example, every integer that is congruent to 3 mod 6 is 3-rough; every integer that is congruent to 5 or 25 mod 30 is 5-rough. In addition, integers greater than 1 which are congruent to 1 or 5 mod 6 are also 3-rough, as well as 5-rough and possibly higher; likewise 1, 7, 11, 13, etc. mod 30 are also 5-rough as well as 7-rough.
lexicalization	eng: Rough number
instance of	e/Integer sequence