少なくても-は
Usage
少なくても means "at least". It can be used with a noun or a number. When 少なくても is used with a noun, は often follow the noun (or the particle after the noun), indicating the noun is under focus. When は follows a number (+ a counter), it emphasizes the number. "At (the) least; to say the least"
Examples
日本語を勉強しているんだから、少なくても一度は日本に行ってみたいと思っている。
Because I am studying Japanese, at least once I am planing to go to Japan.
どんなに忙しくても、少なくても6時間は寝た方がいいですよ
No matter how busy you are, you should at least get six hours of sleep.