We know that 41 is a prime number, it has only two factors, i.e. 1 and 41.
41 is a prime number and has no composite factors. Composite factors are those that have more than 2 factors other than 1 and itself.
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100.
All the natural numbers which are not prime numbers are composite numbers as they can be divided by more than two numbers. For example, 6 is a composite number because it is divisible by 1, 2, 3 and even by 6.
Is 47 a prime number? Yes, because its only factors are 1 and itself. Is 47 a composite number? No, because it doesn't have proper factors.
We know that 41 is a prime number, it has only two factors, i.e. 1 and 41.
The number 44 is the even composite number and it has 6 factors. It is said to be an even composite number, as it has factors other than one and the number itself.
Prime Factors of 73
We know that 73 is a prime. We cannot factor it further since the prime numbers do not have factors other than one and the number itself.
The primes, in order, are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, ... etc.
Nine is not a prime number because it has proper factors: $$9 = 3 × 3$$. This is, 3 is a proper factor of 9, which makes 9 a composite number.
No, 12 is not a prime number. The number 12 is divisible by 1, 2, 3, 4, 6, 12. For a number to be classified as a prime number, it should have exactly two factors. Since 12 has more than two factors, i.e. 1, 2, 3, 4, 6, 12, it is not a prime number.
First, except for the number 2, all prime numbers are odd, since an even number is divisible by 2, which makes it composite. So, the distance between any two prime numbers in a row (called successive prime numbers) is at least 2.
Zero is neither prime nor composite. Since any number times zero equals zero, there are an infinite number of factors for a product of zero. A composite number must have a finite number of factors. One is also neither prime nor composite.
Number 41 is prime because it doesn't have proper factors. In other words, the only factors of 41 are 1 and itself.
First Few Pairs of Twin Primes
(3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73), (101, 103), (107, 109), (137, 139), …
The divisors of 69 are \[1,3,23,69\]. So, the number 69 has more than two divisors. So, 69 is NOT a prime number.
No, 77 is not a prime number. The number 77 is divisible by 1, 7, 11, 77. For a number to be classified as a prime number, it should have exactly two factors. Since 77 has more than two factors, i.e. 1, 7, 11, 77, it is not a prime number.
The only factors of 19 are 1 and 19, so 19 is a prime number. That is, 19 is divisible by only 1 and 19, so it is prime.
“The best number is 73,” Cooper explained in the episode. “Why? 73 is the 21st prime number. Its mirror, 37, is the 12th, and its mirror, 21, is the product of multiplying seven and three ... and in binary, 73 is a palindrome, 1001001, which backwards is 1001001.”
No, 99 is not a prime number. The number 99 is divisible by 1, 3, 9, 11, 33, 99. For a number to be classified as a prime number, it should have exactly two factors. Since 99 has more than two factors, i.e. 1, 3, 9, 11, 33, 99, it is not a prime number.
As the number 98 is a composite number, it has more than two factors. The list of factors of 98 is 1, 2, 7, 14, 49 and 98.
The prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
The number 444 is a composite.
Yes, since 69 has more than two factors i.e. 1, 3, 23, 69. In other words, 69 is a composite number because 69 has more than 2 factors.
The number 52 is a composite number and it has many factors other than one and the number itself. Factors of 52: 1, 2, 4, 13, 26, and 52.