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 cac so nguyen to P sao cho
a. P+10;P+20 la cac so nguyen to
b. P+2;P+6;P+8;P+14 la cac so nguyen to
tim so nguyen to sao cho p+2+p+6 p+8 p+12 p+14 cung la so nguyen to
tim so nguyen to p sao cho p+4;p+8 la 2 so nguyen to
tim so nguyen p sao cho 2 so p+8 va p+10 la so nguyen to
Bai 1:tim so nguyen P biet P+2va P+4 deu la nguyen to
bai 2: tong 2^100×7×11+81^3 la nguen to hay hop so ( giai thich)
Bai 3: tim so nguyen to P de P +2,p+6,P+8 deu la cac so nguyen to
tim so tu nhienK sao cho :
a. 70.K la so nguyen to
b. K ;k+6;K; K+8;K+12;K+14 deu la so nguyen to
tim so nguyen to p sao cho p+8 va p+14 la so nguyen to
tim so nguyen to p sao cho p+8 va p+10 la so nguyen to
