Which of the following is a prime number?
Correct answer: 313
WaldoLydeker
Heartland Old Guy, whenever you don't know the answer, you get nasty. Quit complaining and learn something.
KAP
Why are some comments attacked by many but not shown? Censorship may be justified but why show the cure without the illness Quizland?
WaldoLydeker
Heartland Old Guy, you complained about not knowing the word "extirpate", stating that whoever uses it, is rubbing you the wrong way because you don't know its meaning. Now it's math you're complaining about. I guess you are not a college graduate where vocabulary and math are essential in taking the SAT to get into college. Stop showing your ignorance!
prudence chestapleny
jack3552, if you add the digits you get 15 which is divisible by 3, therefore it is divisible by 3.
Floorazz
Easy calculation to determine if numbers are divisible by 3, add up the digits, if the sum is divisible so is the number, 5+7+3=15 so 573 is not a prime.
jack3552
The even numbers were easy to rule out, pretty hard to rule out 573 in just a few seconds though
PointedVirgo58747
always forget
WaldoLydeker
mrsflintstone, I do. I was a mathematics major in college.
mendel 234
the largest known prime number is 24,862,048 digits long. that is close to 25 million digits.
Player #25874027
Doubletops,
If you go back to the main menu you can see history and I think you may be able to enter the comments and reply there.
Can’t guarantee that but give it a try if you think it’s necessary
Lisik
jack3552, except 2
Mars V
jack3552, I ruled out 573 in just a few seconds. It’s divisible by 3.
annieV1940
To all the haters I got it right!!
batman25/1
Kurosawa4848, 106x2=212 so not a prime number .
batman25/1
prudence chestapleny, no you have to look at the given number .
DandeIion
A prime number is a number with exactly two divisors (which excludes 1 from being prime number) - definition I like the most. (: