Online Course Discussion Forum

week 9 ia

 
 
Picture of Amy T
week 9 ia
by Amy T - Sunday, 5 May 2019, 7:30 PM
 

Find all m>1 such that 511≡368(mod m).

 
Picture of David Reynoso
Re: week 9 ia
by David Reynoso - Monday, 6 May 2019, 11:21 AM
 

Remember $a \equiv b \pmod{m}$ if $m | b -a$. 

For example, $42 \equiv 12 \pmod{5}$, since $5 | 42 - 12$, and also $42 \equiv 12 \pmod{15}$, since $15 | 42 - 12$.