Các câu hỏi tương tự
cho p va 2p+1 la so nguyen to (p>3).chung minh rang:4p+1 La hop so
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 (p<3) va 2p+1 cung la so nguyen to . Hoi 4p+1 la so nguyen to hay hop so?Vi sao?
cho p la so nguyen to lon hon 3
a] chung to rang p 6k+1 hoac 6k+5
b] biet 8p +1 la 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
Cho p va 2p +1 la cac so nguyen to [p>5] .Hoi 4p+1 la cac so nguyen to hay la hop so ?
Xem chi tiết
a) Cho p va p+2 la cac so nguyen to ( p > 3 ) . Chung minh rang p + 1 chia het cho 6
b) Cho p va p + 4 la cac so nguyen to ( p > 3 ) . Chung minh rang p + 8 la hop so
Cho p va 2p+1 la cac so nguyen to (p>5).Hoi 4p+1 la so nguyen to hay hop so
cho p va p+8 la so nguyen to(p>3).chung minh rang:8p-1 la hop so