This number is a prime.
4673^(2+3+5+7) + (15750^2 + 15750^3 + 15750^5 + 15750^7) is prime. Note that 2,3,5,7 are the only prime factors of 15750. [Sariyar]
4673^(2+3+5+7) + (15750^2 + 15750^3 + 15750^5 + 15750^7) is prime. Note that 2,3,5,7 are the only prime factors of 15750. [Sariyar]