What does x=pmodn mean where x,p,are integers and n is a natural number?
x is a number that, when divided by n, will leave a remainder of p.
Mathworld has plenty of information.
Cookiemonster's statement is true as long as you assume that p< n, which is the most common use. More generally, "x= p, mod n" (actually "x congruent to p mod n" with the congruence sign having 3 lines instead of only two like "="), means that x-p is exactly divisible by n.
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