This is my thought so far, but is 1 a prime number? I have a feeling the lowest prime number is 2? If I can't think of anything else, I will go with that one. Thanks for your help.
Hmmm, Sarah, I was fairly sure that 1 is a prime from my maths studies (not yesterday or the day before) but a little research this morning suggests otherwise.
If I think of anything else I'll post it here.
I have spent many days pondering over this one. The other suggestion I have thought of is lowest pure number. But I'm not confident on that one either!!
Nice try, but it's not strictly true, fractions are also numbers (there is no lowest positive number). It would have to be I for integer or WN for whole number.