tim so nguyen p sao cho p^2=1 va p^4+1 cung la so nguyen to. tra loi so nguyen to thoa man la p=
tim so nguyen to p sao cho p^2+1 va p^4+1 la so nguyen to.
tim so nguyen to p sao cho p^2+1 va p^4+1 la so nguyen to
tim so nguyen to p sao cho:
a,p+2 va p+4 la so nguyen to
b,p+2 va p+6 va p+8 la so nguyen to
c,p+10 va p+14 la so nguyen to
tim so nguyen to p sao cho p+2 va p+4 la so nguyen to
tim so nguyen to p sao cho p+2 va p+4 deu la so nguyen to ???
Tim cac so nguyen to p sao cho p+2 va p+4 la cac so nguyen to
tim so nguyen to ab co 2 chu so khac nhau sao cho ba cung la 1 so nguyen to va ab - ba la 1 so chinh phuong
tim so nguyen to p sao cho p+4 va p+8 la cac so nguyen to
