Finding Primes!

aa, bb, cc and dd are integers such that 0<a,b,c,d<9990<a,b,c,d<999 and ab=cdab=cd.

How many ordered sets of integers (a,b,c,d)(a,b,c,d) satisfy

a+b+c+d=pa+b+c+d=p

where pp is a prime number?

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