only 1 or 13
13 is a Prime number
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NO, 39 is composite 3 goes into it 3*13=39 so therefor 39 is not prime
No. 39 = 3 * 13 39=3 so in that case 39 is not a prime number
39 is not a prime number. It can be divided by 3 and 13.
The GCF of 39, 143, and 156 is 13. 13 x 3 = 39 13 x 11 = 143 13 x 12 = 156 39 is the product of two prime numbers , 3 and 13. Remember, a prime number is a number divisible only by 1 and itself. So, you can deduce that the factor you are looking for must either be 13 or three. Since you are looking for the greatest common factor, you now have to find out which number is greater ... ... and this is .... 13 !
Factors of 39 are 1, 3, 13, 39. Whereas the prime factors of 39 are 3, 13, 39.