Mathematics, 15.04.2020 19:01 Queenbee2304
We stated that the number 561 is a Carmichael number, but we never checked that a561 ≡ a (mod 561) for every value of a. (a) The number 561 factors as 3 · 11 · 17. First use Fermat’s little theorem to prove that a561 ≡ a (mod 3), a561 ≡ a (mod 11), and a561 ≡ a (mod 17) for every value of a.
Then explain why these three congruences imply that a561 ≡ a (mod 561) for every value of a.
Answers: 2
Mathematics, 22.06.2019 00:30, mitchellmarquite
Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?
Answers: 3
We stated that the number 561 is a Carmichael number, but we never checked that a561 ≡ a (mod 561) f...