See also the Dr. Math FAQ: 0.9999 = 1 0 to 0 power n to 0 power
0! = 1 dividing by 0 Browse High School Number Theory Stars
indicate particularly interesting answers or good places to
begin browsing. Selected answers to common questions: Infinite
number of primes? Testing for primality. What is 'mod'? -
Pythagorean Triple with 71 [12/07/1997] Is there a Pythagorean
triple that contains the number 71? - Quadratic Residues
[06/30/1998] I need a fundamental explanation of the concept of
quadratic residues. - Quadratic Residues and Sums of Squares
[10/28/1998] In one of the lemmas in number theory, if p is an
odd prime number, then there exist x, y such that
x^2+y^2+1=kp... - A Quartic Diophantine Equation: 10657 +
11579x^2 + x^4 = y^2 [12/29/2008] Doctor Vogler helps a student
look for integer solutions to a quartic polynomial by noticing a
difference of squares in its coefficients and factoring its
constant term. - Ramsey's Theorem and Infinite Sequence
[06/01/1999] Ramsey's Theorem applied to divisibility in i