How small can a multiplicative group be?

1 · John Cook · Aug. 25, 2021, 10:06 p.m.
The previous post looked at the multiplicative group of integers modulo a number of the form n = pq where p and q are prime. This post looks at general n. The multiplicative group mod n consists of the integers from 1 to n-1 that are relative prime to n. So the size of this group […] The post How small can a multiplicative group be? first appeared on John D. Cook....