If the least common multiple of two prime numbers is 21, then the two prime numbers are () and (), respectively
3 7
1, 10, 12, 25, 37, 54, 102, 417, 23, 398
The form is as follows:
If a number is both a factor of 21 and a multiple of 21, then what is the number? Write it in the form of adding two prime numbers, () + () = ()
21+21=42
The sum of two prime numbers is () and ()
A number is not only a factor of 18, but also a multiple of 18. This number is 18. Write it as the sum of two prime numbers in the form of () or ().
11+7,13+5
Write 14 as the sum of two prime numbers
Write 14 as the sum of two prime numbers in the form of 3 + 11
Write 14 as the sum of two prime numbers in the form of 7 + 7
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Fill in the following brackets with the appropriate prime number 38 = () + ()
38=( 7)+( 31)
32 = () + () = () + () = () + () prime
1+31 3+29 13+19
Prime numbers within 30 are______ .
Prime numbers within 30 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29. So the answer is: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
Divide 30 into the sum of two prime numbers
At least 4
19+11
13+17
7+23
1 is not a prime number
Prime sums within 30
129