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49 is not prime, as it's 7 * 7.
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∙ 2010-06-03 16:41:18
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What is the number described by all the clues belowthe number is not less than 20 the number is not greater than 40 the number is not divisible by 2 3 or 7 the number is not a prime number?
25 is the number not less than 20, not greater than 40, not divisible by 2 3 or 7, and not a prime number.
How did you find that 71 is a prime number?
Its square root is less than 9, but it is not evenly divisible by any number less than 9, other than 1, so it is a prime number
What is the greatest prime number less than 26?
25 is divisible by 5 24 is divisible by 2,3,4,6,8,12 So the answer is 23
Can you find a number less than 150 that is divisible by 4 different prime numbers?
85
Is the number 551218171009141211314 a prime number?
No.551218171009141211314 is not a prime number.It is divisible by 2 (and 275609085504570605657, of course, but which is also not a prime number!)But ...551218171009141211267 is the prime number nearest belowthe number in the question, and551218171009141211417 is the next higher prime number.So the nearest prime number to 551218171009141211314 is 551218171009141211267, being only 47 less than the given number, whereas 551218171009141211417 is 103 more than the given number.
What number is divisible by 6 and a prime number less than 30?
18
What is the number described by all the clues belowthe number is not less than 20 the number is not greater than 40 the number is not divisible by 2 3 or 7 the number is not a prime number?
25 is the number not less than 20, not greater than 40, not divisible by 2 3 or 7, and not a prime number.
How did you find that 71 is a prime number?
Its square root is less than 9, but it is not evenly divisible by any number less than 9, other than 1, so it is a prime number
If a two-digit number less than 40 is divisible by only one prime number The sum and the difference between the digits is also a prime number thus what is the number?
16
What is the greatest prime number less than 26?
25 is divisible by 5 24 is divisible by 2,3,4,6,8,12 So the answer is 23
Can a number less than a number be divisible by it?
No.
Can you find a number less than 150 that is divisible by 4 different prime numbers?
85
What number is less than 50 not a prime number and is not divisible by 2 3 4 5 6?
49 is 7 * 7.
Why is 10 composite number?
Because it is divisible by the prime number 2, which is less than 10.
A set of prime numbers less than 18?
Prime numbers are such number which are only divisible by 1 and by itself only..{1,2,3,5,7,11,13,17}
Is the number 551218171009141211314 a prime number?
No.551218171009141211314 is not a prime number.It is divisible by 2 (and 275609085504570605657, of course, but which is also not a prime number!)But ...551218171009141211267 is the prime number nearest belowthe number in the question, and551218171009141211417 is the next higher prime number.So the nearest prime number to 551218171009141211314 is 551218171009141211267, being only 47 less than the given number, whereas 551218171009141211417 is 103 more than the given number.
Why are square numbers one less than a prime number always even?
Prime numbers, except 2, are always odd (they would not be prime if they were even cos they would be divisible by 2.) 1 less than any odd number must be an even number.
