![](https://play-lh.googleusercontent.com/EGemoI2NTXmTsBVtJqk8jxF9rh8ApRWfsIMQSt2uE4OcpQqbFu7f7NbTK05lx80nuSijCz7sc3a277R67g=s32)
A Google user
I have prime number synesthesia (related to ordinal linguistic personification) where prime numbers feel smooth and composite numbers feel rough, and it's really irritating when a number feels both borderline rough and smooth. This app helps relieve my anxiety and firmly helps me place that number in the rough versus smooth category!
9 people found this review helpful