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ALL even numbers (except 2 itself) are composite, so you don't need to worry about the number being composite or not.For "the greatest" number that fulfills some property, it often helps to insert the largest possible digit, from left to right.
First digit: use a 9
Second digit: use a 9
Third digit: Can't use a 9, since that would make it odd. Use an 8 instead.
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What is the greatest even 3-digit composite number?
Work back from 999:999 is odd ... no.998 is even and divisible by 2, so it is composite. (All even numbers are composite!)Further Information:-All even numbers are composite except for 2 which is a prime number.
What is the greatest 8 digit even number using prime digits?
To be an even number then the final digit = 2. The largest single prime digit is 7 (as both 8 and 9 are composite). The greatest even number fulfilling the conditions is 77777772.
Is 1814 a prime number or composite number?
Every even number except 2 is a composite number. 1814 is also an even number, therefore it is a composite number.
Is 750 a composite number?
YES. 750 is a composite number because it is an even number. The only even number that is not a composite number is 2.
Is 122 composite or prime?
As an even number greater than 2, 122 is a composite number.
Is 230 a prime number or a composite number?
Is 230 a prime number or composite?230 is a composite number. It's composite because it is even and all even numbers (except 2) are composite.
What is zero composite number or even number?
Zero is an even number but it is not composite (nor prime).
Is 66 a prime number or a composite number?
All even numbers, except 2, are composite.
Is 1212 composite or prime?
As an even number greater than 2, 1212 is a composite number.
Is 678 prime or composite?
678 is an even number. The number 2 is the only even prime. All other even numbers are composite.
Is 64 a prime number or a composite number?
Any even number except 2 is composite.
Is 434 a prime or composite number?
It is a composite number. It is an even number, so it is divisible by 2. The only even number that is a prime number is 2. All other even numbers are composite numbers.
