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2 3 5 7
11
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JordanSymmetrical primes are prime numbers that remain the same when their digits are reversed. The symmetrical primes between 1 and 100 are 2, 3, 5, 7, 11, 101. These numbers are prime because they are only divisible by 1 and themselves, and they are symmetrical because they read the same forwards and backwards.
2, 3, 5, 7 and 11.
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Is there a pattern in the prime and composite numbers between 1 to 100?
There are some patterns, but none that can help you determine, in all cases, whether the number is a prime or not.For example: * All primes except 2 are odd numbers. However, not all odd numbers are primes. * All primes greater than 3 are of the form 6n - 1, or 6n + 1. However, not all numbers of this form are primes.
How many pairs of coprime primes are there between 1 and 50?
All pairs of two primes are coprime. There are fifteen primes under 50. So that means there are 105 unique pairs of "coprime primes", or more generally, pairs of primes, under 50.
Sum of all primes less than 100?
The sum of all prime numbers less than one hundred is 1104.
List all the twin primes that are less than 100?
here are all 8, 3,5 11,13 17,19 59,61 29,31 41,43 5,7 71,73
List all prime numbers?
Euclid proved there are infinite. He said that if there were a finite number of primes, if you multiply all the primes together and then add 1, the result will be a prime. Thus, there are infinite primes.
