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week 9 ia

 
 
Picture of Amy T
week 9 ia
by Amy T - Sunday, May 5, 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, May 6, 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 $15 | 42 - 12$.