The common factors of 12 and 18 are (), the largest of which is (). 12 and () are mutually prime numbers (fill in one possibility) The greatest common factor of 6 and 8 is () The greatest common factor of 17 and 51 is () The greatest common factor of 17 and 23 is () If M = 2 * 2 * 3 * 3, n = 2 * 3 * 5, then the greatest common factor of M and N is () Two, three, four and five can form a pair of Coprime numbers If there is a two digit number whose two digits are combined and prime to each other, the minimum of the two digits is () It is known that M = 2 * 3 * A and N = 2 * 7 * A. if the greatest common factor of M and N is 10, then a = () Two numbers that become coprime () Use a number to divide 32 and 28 exactly. The maximum number is ()

The common factors of 12 and 18 are (), the largest of which is (). 12 and () are mutually prime numbers (fill in one possibility) The greatest common factor of 6 and 8 is () The greatest common factor of 17 and 51 is () The greatest common factor of 17 and 23 is () If M = 2 * 2 * 3 * 3, n = 2 * 3 * 5, then the greatest common factor of M and N is () Two, three, four and five can form a pair of Coprime numbers If there is a two digit number whose two digits are combined and prime to each other, the minimum of the two digits is () It is known that M = 2 * 3 * A and N = 2 * 7 * A. if the greatest common factor of M and N is 10, then a = () Two numbers that become coprime () Use a number to divide 32 and 28 exactly. The maximum number is ()

The greatest common factors of 6 and 8 are (2). The greatest common factors of 17 and 51 are (17). The greatest common factors of 17 and 23 are (1). If M = 2 * 2 * 3 * 3, n = 2 * 3 * 5, then the greatest common factors of m and N are (6)

5 = () + () 8 = () + () 10 = () + () 19 = () + () + () 18 = () + () 66 = () multiply () "

5=2+3
8=1+7
10=3+7
19=17+2
18=13+5
66 = does not hold, the divisor of 66 is 2,3,11, so at least three multiplications can be made, and other multiplications can not be made by prime numbers

() + () = 60 (prime)

53+7=60

60 = () * () * () * () prime number

60=(2)*(2)*(3)*(5)

The sum of two prime numbers is 40. What is the maximum product of the two prime numbers?

Prime numbers less than 40 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, of which the sum of two prime numbers is 40 is 3 and 37; 11 and 29, 17 and 23, their products are: 3 × 37 = 111; 11 × 29 = 319; 17 × 23 = 391; a: the maximum product of these two prime numbers is: 391

The sum of two prime numbers is 40. What is the maximum product of the two prime numbers?

Prime numbers less than 40 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, of which the sum of two prime numbers is 40 is 3 and 37; 11 and 29, 17 and 23, their products are: 3 × 37 = 111; 11 × 29 = 319; 17 × 23 = 391; a: the maximum product of these two prime numbers is: 391

Put the prime numbers between ten and forty in the brackets so that the sum of the four numbers connected by arrows is equal
↗ （ ）→（ ） ↘
（ ）→（ ）→（ ）→（ ）
↘ （ ）→（ ） ↗
Advance the first line by 8 spaces. It's the first arrow in the first line and the first arrow in the second line

The prime numbers between 10 and 40 are 11, 13, 17, 19, 23, 29, 31, 37
Fill in this way
↗ （11 ）→（37 ） ↘
（13）→（17 ）→（31 ）→（23）
↘ （19 ）→（29 ） ↗
It can be verified that the sum of the four numbers connected by the arrow is 84

Fill in the brackets with the appropriate number: 26 equals () + () equals () + (). 40 equals () + () equals () + () equals () + () equals () + ()
It's a prime

26 equals (11) + (15) equals (13) + (13). 40 equals (20) + (20) equals (15) + (25) equals (10) + (30)

The sum of two prime numbers is 40. What is the maximum product of the two prime numbers?
Minister of Western Hunan

“Leona040633”：
The sum of two prime numbers is 40,
3+37=40,3×37=111
11+29=40,11×29=319
17+23=40,17×23=391
The product of 17 × 23 is the largest
Good luck and goodbye

If a number is both a factor of 21 and a multiple of 21, then the number is ()? Write it as the sum of two prime numbers, () + () = ()

If a number is both a factor of 21 and a multiple of 21, then the number is (21)? Write it as the sum of two prime numbers, (2) + (19) = (21)