Because it has more than two factors.
No, its not a prime. 3 x 331 = 993
991 is a prime, the others are composite.
The number 993 is a composite number because you can divide it by 3. A good strategy for figuring this out on your own is adding up all the digits. If you can divide the sum of the digits by any numbers besides 1 and that number than that number will be a composite number. You can do it, just remember this!
Because it can be divided by other numbers not by itself nor 1 For Example: 993 / 3 = 331: which can be divided
To a whole number it is 993
the presidents real number is 226-993-8586
1-530-993-4889 call him
993×100% = 99,300%
The best way to tackle this is to take the largest 3 digit number (999) and work out its prime factors. You can then work down until you get one with exactly five prime factors. 999 is 3x3x3x37, 998 is 2x499, 997 is prime, 996 is 2x2x3x83, 995 is 5x199, 994 is 2x7x71, 993 is 3x331, 992 is 2x2x2x2x2x31, 991 is prime, 990 is 2x3x3x5x11. That is the first we came across with five prime factors. Therefore the largest 3 digit number with exactly five prime factors is 990.
993
No. 540 is smaller than 993.
331