Yes. It's 7 .
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I think 7 is rational, don't you? * * * * * IT IS! says a master on the subject.
147 49,3 7,7,3 The square root of 147 equals the square root of 49 times the square root of 3 which is 7 times the square root of 3.
Rational.
49 is not a prime number. It is the square of the prime number 7.
betetween 50 and 49