Is there a subtle difference between 少なくても and 少なくとも？

Question

My sense is that the meaning is identical but that 少なくとも is somewhat more formal than 少なくても. Is that observation valid?

Answer 1

You are correct. 少なくても is probably more likely to be used in spoken language, rather than calling it "formal." It can also be replaced by せめて in some cases.