TRIPLE PRIME
Number Theory
Level
2
2664444662 = a x b x c, where a, b, and c are prime numbers and c > b > a. Find a + b.
The answer is 13.
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1 solution
since the number is even, one of the prime factors has to be even, i.e. 2. that would be "a". next, divide the given number by 2 and factorise the result, it will go with 11. therefore b=11. and 2+11=13