PROGRAMMING:Output all prime numbers between M and n
This problem requires the output of the given integer $$M $$and $$n $$interval of all prime numbers, output 10 per line. A prime is a positive integer that can only be divided by one and itself. Note: 1 is not a prime, 2 is a prime.
###Input format:
Input gives two positive integers $$M $$and $$n $$($$1 / Le M / Le n / Le 500 $$) in one line.
###Output format:
Output prime number, each number occupies 6 bits, each line outputs 10. If the number of prime output in the last line is less than 10, you also need to wrap the line.
If the input range is illegal, output "invalid.".
###Input sample 1:
```in
2 100
```
###Output sample 1:
```out
2 3 5 7 11 13 17 19 23 29
31 37 41 43 47 53 59 61 67 71
73 79 83 89 97
```
###Input sample 2:
```in
6 2
```
###Output sample 2:
```out
Invalid.
```
answer：If there is no answer, please comment
###Input format:
Input gives two positive integers $$M $$and $$n $$($$1 / Le M / Le n / Le 500 $$) in one line.
###Output format:
Output prime number, each number occupies 6 bits, each line outputs 10. If the number of prime output in the last line is less than 10, you also need to wrap the line.
If the input range is illegal, output "invalid.".
###Input sample 1:
```in
2 100
```
###Output sample 1:
```out
2 3 5 7 11 13 17 19 23 29
31 37 41 43 47 53 59 61 67 71
73 79 83 89 97
```
###Input sample 2:
```in
6 2
```
###Output sample 2:
```out
Invalid.
```
answer：If there is no answer, please comment