1. What is the minimum natural number with four different prime factors? And decompose the prime factors 2. Which four digit numbers can be arranged with 0.1.6.8, which of these numbers can be divided by 3, have prime factor 7, and are multiples of 9 3. Write 6 prime numbers larger than 30 and 6 composite numbers larger than 60 4. Given that the sum of two primes is 40, what is the maximum product of the two primes? 5. If a is prime, a + 12 is prime, and a + 18 is also prime, how much is a

1. What is the minimum natural number with four different prime factors? And decompose the prime factors 2. Which four digit numbers can be arranged with 0.1.6.8, which of these numbers can be divided by 3, have prime factor 7, and are multiples of 9 3. Write 6 prime numbers larger than 30 and 6 composite numbers larger than 60 4. Given that the sum of two primes is 40, what is the maximum product of the two primes? 5. If a is prime, a + 12 is prime, and a + 18 is also prime, how much is a


1. What is the minimum natural number with four different prime factors? Decompose prime factors
2*3*5*7=210
2. Which four digit numbers can be arranged with 0.1.6.8, which of these numbers can be divided by 3, have prime factor 7, and are multiples of 9
1068 1086 1608 1680 1806 1860
6018 6081 6108 6180 6801 6810
8016 8061 8106 8160 8601 8610
It is divisible by 3 and has a prime factor of 7:1
1680 1806 8106 8610
3. Write 6 prime numbers larger than 30 and 6 composite numbers larger than 60
31 37 41 43 47 53
62 64 66 68 70 72
4. Given that the sum of two primes is 40, what is the maximum product of the two primes?
23+17=40 23*17=391
5. If a is prime, a + 12 is prime, and a + 18 is prime, how much is a
5+12=17 18+5=23 A=5



Some questions on prime numbers and composite numbers
1. What is the minimum natural number with four different prime factors? Decompose prime factors
2. Which four digit numbers can be arranged with 0.1.6.8, which of these numbers can be divided by 3, have prime factor 7, and are multiples of 9
3. Write 6 prime numbers larger than 30 and 6 composite numbers larger than 60
4. Given that the sum of two primes is 40, what is the maximum product of the two primes?
5. If a is prime, a + 12 is prime, and a + 18 is prime, how much is a


1.2*3*5*7=210
2. 1068 1086 1608 1680 1806 1860
6018 6081 6108 6180 6801 6810
8016 8061 8106 8160 8601 8610
The omnipotence is divided by 3, and 7 are prime numbers
1680 1806 8106 8610
It's a multiple of 9. None of them
3.31 37 41 43 47 53 ; 62 64 66 68 70 72
3 + 37 11 + 29 17 + 23, the integral is 111 319 391
The answer is 391
5. The answer is 5
I'm so tired



1. Given that three prime numbers A.B.C satisfy a + B + C + ABC = 99, then the value of | A-B | + | B-C | + | C-A | is equal to
2. If P is prime and P ^ 3 + 5 is still prime, then p ^ 5 + 7 is ()
A. Prime B. can be prime or composite C. composite D. is neither prime nor composite
3. To find such a prime number, when it is added with 10 and 14, it is still a prime number


1. Given that three prime numbers A.B.C satisfy a + B + C + ABC = 99, then the value of | A-B | + | B-C | + | C-A | is equal to
Suppose a