It is 45.
one is 17 and 71, another one is 11,
there are 4
the prime numbers are 2,3,5,7,11,13,17,19,23,29,31,37,39,43,47,53,57,59,61,67,71,73,79,81,83,89,91,93,97,
They are: 11 13 17 19 31 41 61 and 71 which makes 8 of them
3 41 43 47
If you multiply two prime numbers, the product (result) will be a composite number, not a prime number. A prime number has exactly two factors, 1 and itself. The product of two prime numbers will have those two numbers as factors, as well. The sum of two prime numbers might be prime if one of those two numbers is 2, the only even prime number, but otherwise it will not be a prime because two odd numbers will have an even sum, which means it is divisible by 2. Examples: 2 + 3 = 5 (prime) 3 + 7 = 10 (not prime) 13 + 17 = 30 (not prime) If you multiply two prime numbers, the sum of the digits of the product might or might not be prime. Examples: 2 x 7 = 14, sum of digits is 5 (prime) 2 x 11 = 22, sum of digits is 4 (not prime) 3 x 5 = 15, sum of digits is 6 (not prime) 3 x 7 = 21, sum of digits is 3 (prime) 5 x 7 = 35, sum of digits is 8 (prime)
All the prime numbers greater than 3 that are between 1-60 end in 1, 3, 5, or 7, are either one or two digits in length, and are odd numbers.
The largest known prime is (2 to the power of 43112609) -1 written out in full would take 13 million digits. The largest prime is an infinate number. it consists 12978189 digits. it is also known as "m43112609".
All prime numbers are not odd numbers. 2 is an even prime number, and it is the only even prime number because all other even numbers have 2 as one of their factors.
These numbers are ALL prime.
All numbers greater than one are positive integers that are either composite or prime numbers.
the number one.