Any number divided by 1 is the number itself.
1, 11, 31, 341
341 is not a prime number. Prime numbers are defined as numbers which can be divided by 1 and themselves. 341 can be divided by 11 and 31 in addition to 1 and iteslf. Hence, 341 is not a prime number.
341
48.7143
68.2
8.525
113.6667
310
30 = 11.36
1 and 341, I think.
24.3571
1, 11, 31, 341