Prime Numbers

# What prime numbers equal 84?

111213 ###### 2010-03-19 20:15:45

No prime numbers equal 84. The only number equal to 84 is 84,

and it isn't a Prime number.

The prime factors of 84 are: 1, 2, 2, 3, and 7

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## Related Questions  Prime factors of 84 are 2 x 2 x 3 x 7. There are not four different prime numbers that produce a product of 84. Of course the primes cannot be unique since 2x3x5x7=210>84.The answer is 2x2x3x7. How can 2 prime numbers ever be equal They cant be Equal. 56 and 84 are both composite numbers, so neither are prime and they are not relatively prime either as they share several factors. x/1 + x/x = 84 where x = a prime number that is divisible by 1 and itself. Then find common denominator of 1x. Then we have x squared/1x + x/1x = 84. To simplify this will be x squared + x/1x = 84. The this becomes 1 + x = 84. Then x = 83. The prime numbers are 1 and 83 which fit the equation. 120 is not a prime and no prime numbers equal a composite (ie non-prime).  the three prime numbers that equal 17 are _+_+_=17 84 and 91 are composite numbers 67 and 73 are prime numbers   there is none it is a composite it is 1 and 84(it self ) Prime numbers are integers. They won't equal a decimal.  19 and 11 are the two prime numbers that equal to 209. The prime factorization of 84 is 2 x 2 x 3 x 7. If two prime number have a sum of 54 they cannot have a sum of 84, and conversely. I guess the only prime numbers that equal 231 are two and 229. The prime numbers (factors) of 70 are: 2,5,7 The prime numbers (factors) of 105 are: 3,5,7 84 is not a prime. All numbers ending in four are composite. Any of its prime factors which are: 2, 3 and 7  As a product of its prime factors: 2*2*3*7 = 84

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