Lehmer's totient problem
Decide whether some composite number n has Euler's totient φ(n) dividing n − 1, as every prime does.
Pull requests
Pull requests bring work from one route into another; merging one adopts it.
Decide whether some composite number n has Euler's totient φ(n) dividing n − 1, as every prime does.
Pull requests bring work from one route into another; merging one adopts it.