the next item in the pattern in

(2.3.5.7.11....)
1.13
2.12
3.15
4.17

To find the pattern in the given sequence (2.3.5.7.11....), we can observe that each number in the sequence is a prime number.

Starting with the number 2, the prime numbers increase successively. The first prime number is 2, followed by 3, which is the next prime number after 2. The next prime number after 3 is 5, and so on.

To find the next number in the sequence, we need to find the next prime number after the last number given in the sequence, which is 11.

Checking for prime numbers, we find that the next prime number after 11 is 13. Therefore, the next item in the pattern is 13.

In summary, the next item in the pattern (2.3.5.7.11....) is 13.