because they can not be divided any further
247/13=19 247 is not a prime
factors: 1, 11, 13, 19, 143, 209, 247, 2717prime factors: 11, 13, 19
The factors are: 1, 3, 13, 19, 39, 57, 247, 741 The prime factorisation is 3 x 13 x 19
13 x 19 = 247
The prime factors of 494 are 2, 13, and 19. The prime factors of 741 are 3, 13, and 19. The common factors are 13 and 19, so the greatest common factor is 13 x 19 = 247.
247 is not prime. 247 = 13 * 19
The factors of 247 are 13 and 19, as 13 multiplied by 19 equals 247. Therefore, 13 times 19 is 247.
The two prime numbers 13*19=247
13 x 19 = 247
1, 13, 19, and 247.
Oh honey, let me break it down for you. The factors of 247 are 1, 13, 19, and 247. That's all she wrote, darling.
1, 7, 13, 19, 91, 133, 247, 1729 The prime factors are 7, 13, 19