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How Can I Place 4D Bet Safely Online?
Answer: 9, 49, 169, ...
1 more than 9 =1+9=10, which is a multiple of 10.
1 more than 49 =50, which is a multiple of 10.
1 more than 169 =170, which is a multiple of 10.
9, 49, 169, 289... Any square of a number ending with 3 or 7.
9, 49, 169, 289 etc.,
Find the sum of all the prime numbers larger than 2 less than 10^12 that are 1 more than a perfect square. Because the number can get pretty big provide the answer mod 1007.
Note: Problem shouldn't take much more than one minute if your answer is taking too long consider looking for optimizations.
What is the number if it is 1 less than a square number and it is not divisible by 3 or 7 (You make a square number when you multiply something by itself, so 49 is square because it is 7 times 7)
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