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How many primes are less than 100?
There 25 primes less than 100: 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.
How many primes are less than 1000?
There are 168 prime numbers less than 1,000.
How many twin primes less than 100?
eight (8)
How many 2 twin primes are less than 100?
There are 8 twin primes less than 100. 3,5 : 5,7 : 11,13 : 17,19 : 29,31 : 41,43 : 59,61 : 71,73
What is the sum of all of the two-digit primes that are greater than 12 but less than 99 and are still prime when their two digits are interchanged?
472.
How many prime numbers are there less in 100?
There are 25 primes smaller than 100.
What do you call numbers greater than 1 that are not primes?
Composite
What are the odd primes less than twenty?
The odd primes less than 20 are: 3 5 7 11 13 17 19
Which prime numbers are greater than 100?
There are an infinite number of primes greater than any number given.
How many even primes are there less than 100?
The only even prime number is... 2 !
What is the sum of the two largest primes less than 60?
59 and 53 are the two largest primes less than 60. 59+53 = 112
Prove that if every even natural number greater than 2 is the sum of two primes then every odd natural number greater than 5 is the sum of three primes?
Given an arbitrary odd natural number greater than five, x, let y = x - 3, then y is an even number greater than 2. By assumption we have that y is the sum of two primes, say y1 and y2, but then x = y1 + y2 + 3 (which is the sum of three primes).
