990
A triangle number has the form n(n+1)2 for some positive integer n.then when you substitute n=44 then it is 990 which is largest triangular number before hundred.
The largest prime number less than 1000 is 997.The largest prime number no less than 1000 is currently 257,885,161-1
It is 999.
1000 ÷ 8 = 125 → largest less than 1000 divisible by 8 is 124 x 8 = 992
Start with 1000 and work back, rejecting any composites that you find.
Pick out the largest number, and check whether it is less than the sum of the other two numbers. If it is less, then you can. If it is greater or equal, then you can't.
1000 more is 577233 1000 less is 575233
312 = 961
9797 is the largest prime number less than 100.
67 will be the largest prime number less than 70.
46503 - 1000 = 45503
It is 43876 - 1000 = 42876.