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1.
A prime number is a natural number which can be divided by two different divisors (namely 1 and the prime number itself) without remainders. Which of the followings is/are prime number(s)? |
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2.
Which of the following is the greatest 3-digit prime? |
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3.
An integer that is greater or equal to 2 is categorized into 2 groups. The first group is the prime number. These prime numbers are the basic building blocks for the second group of number, which is known as? |
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4.
Which of the following statements is false? |
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5.
The Sieve of Eratosthenes is one of the methods to determine whether a given integer is a prime number or not. There exists another method, which is called? |
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6.
Many great mathematicians proved that there is an infinite number of prime numbers. Which of the followings is NOT one of them? |
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7.
Any prime number that can be expressed in the form of 2^(2^n) + 1 is called a Fermat prime. On the other hand, what is the name given to a prime number that can be expressed in the form of 2^n ? 1, where n is any positive integer? |
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8.
The largest known prime number so far (July 2007) is 2^32582657 ? 1, which contains approximately 9.8 million digits. Which organization is offering a USD 100,000 reward to the person or group who discovers a prime number which has more than 10 million digits? |
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9.
A very famous theorem can be used to estimate how many prime numbers are there between 1 and x by using the formula x/In x. Which theorem is it? |
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10.
Prime numbers are used in cryptography algorithms, which are used in the field of military and banking. |
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