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Find the sum of primes

URGENT HELP!Squares into PrimesSome primes can be expressed as the sum of two squares, as in 13=2^2+3^2; some can't:7=/=a^2+b^2.
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Andrew arranged the number 1, 2, 3, ...11, 12 into six pairs so that the sum ofany two numbers in a pair is prime and no two of
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2. asked by Jane
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The primes 3, 5, and 17 have the property such that their quadratic nonresidues are also primitive roots. Find the next two
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2. asked by Fiona
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Two consecutive odd primes, such as 11 and 13, are called a pair of "twin primes" how many pairs of twin primes are there
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This is a riddle, and I'm supposed to find a 5-digit number from it.....My thousand's digit is the first that is perfect, but if
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2. asked by Peter
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This is a riddle, and I'm supposed to find a 5-digit number from it.....My thousand's digit is the first that is perfect, but if
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2. asked by Catherine
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It is likely that no one will ever find a formula that will give all the primes less than an arbitrary number. The formulas in
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2. asked by Kyleigh
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three consecutive primes are summed. when the sum is squared, the result is 72,361. what is the largest of the three primes?
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2. asked by shaun
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It is likely that no one will ever find a formula that will give all the primes less than an arbitrary number. The formulas in
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2. asked by Kyleigh
3. 102 views
Two of the many conjectures involving primes are given in exercises 36 and 37.36. The mathematician Christian Goldbach
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2. asked by Kyleigh
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