Problem 2B
Test 1
 2319
Solution
 31

Test 2
 6804
Solution
 No Primes

Test 3
 100000001
Solution
 No Primes

Test 4
 166732
Solution
 16673

Test 5
 386510893
Solution
 38651

Test 6
 1673
Solution
 673

Test 7
 73930139
Solution
 73930139