Question

A为质数,B为正整数,且 9(2A+B)^2=509(4A+511B)

Answer 1

python代码,a,b在10000以内,只找到了一组251和7

>>> for A in xrange(2,10000):

for B in xrange(1,10000):

if 9*(2*A+B)*(2*A+B)==509*(4*A+511*B):

print A,B

答案

A=251 B=7