Các câu hỏi tương tự
chung to rang neu p,p+2 va p+4 deu la so nguyen to thi p3 +2 cung la so nguyen to
voi 2 so nguyen to cung nhau neu 2 so nguyen to cung nhau co tich va so ching phuong thi 2 so deu la so chinh phuong
tim hai so nguyen to sao cho tong va tich cua chung deu la so nguyen to?
cho P>5 la so nguyen to va 2P+1 cung la 1 so nguyen to Chung minh 4P+1 la hop so
Cho P la so nguyen to lon hon 3 va 5p+1 cung la so nguyen to. Chung minh rang 7p+1 la hop so
1) Tim so nguyen to P de co:
a) P+10 va P+14 deu la so nguyen to
b) P+2 ;P+6 va P+8 deu la so nguyen to
cho p la so nguyen to > 5 . biet p + 4 , p+3 , p+2 deu la so nguyen to . chung minh p +96 la hop so
tim so nguyen to p sao cho p+2 va p+4 deu la so nguyen to ???
tim so nguyen to p biet rang:
a) p+94 , p+1994 la so nguyen to
b) p^2+4 va p^2-4 deu la so nguyen to