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How can you tell 28655 not a prime number looking at the last digit?
Wiki User
∙ 13y ago
All numbers ending in 0 and 5 are divisible by 5 and since 28655 ends in 5, it is divisible by 5 and therefore not prime.
Wiki User
∙ 13y ago
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Why is 28655 a prime number?
It is not a prime number.
How can you tell that 28655 isn't a prime number?
Any number that has a 5 or 0 in the ones place is divisible by 5. If a number is evenly divisible by another number, it is NOT prime.
What is the largest two-digit prime number?
9797 is the largest two digit prime number.
How is 28655 not a prime number?
Becouse 5731*5=28655.5 is a factor, you can multiply a number by five to get this (if the number ends in 5 or 0, 5 is always a factor).
What is the largest 5-digit prime number?
The largest 5-digit prime number is 99,991
Why is 28655 a prime number?
It is not a prime number.
How do you explain that 28655 is not a prime number?
28655 ends with a 5, therefore it must be divisible by 5. A prime number is something that cannot be divided at all (At least without creating a decimal). If you can divide 28655 by 5, then it cannot be a prime number.
Is 28655 a prime number?
No, the number 28,655 is composite.
Why 28655 isn't a prime number?
The only prime number that ends in 5 is 5.
How can you tell that 28655 is not a prime number by its last number?
its a multiple of 5....
Why is 28655 not a prime number?
Because it has many Factors 1, 5, 11, 55, 521, 2605, 5731, 28655
How can you tell that 28655 is not a prime number?
Any number ending in 5 (or 0) is divisible by 5. 28655 = 5 x 5731 and is therefore not a prime number. Note: 5731 is also not a prime as it is divisible by 11 : 11 x 521 = 5731
How can you tell 28655 isn't an prime number?
It's greater than 5 and ends in 5.
How can you tell that 28655 isn't a prime number?
Any number that has a 5 or 0 in the ones place is divisible by 5. If a number is evenly divisible by another number, it is NOT prime.
What number is a odd prime number and the ones digit is 8 more than its ten digit?
The number you're looking for is.... 19
What is a two digit prime number with each digit a prime number and the sum a prime number?
23
What two digit prime number does not have the sum of seven and is a multiple of seven?
A prime number cannot be a multiple of seven. You might be looking for 59.
