The first number in the sequence 19, 23, 29, 31 is 19. This sequence lists prime numbers, and 19 is the smallest among them.
19 and 23 are prime.
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
If you're working with (23 + 5), then you'll work long and hard and still never find a way to get 19. There are none. The sum of 23 and 5 is 28, and if you get any other number, then you've added 23 to 5 incorrectly.
19+17+23+17=76 76/4 (the number of numbers) = 19
To find the next number in the series 16, 23, 19, 19, 22, 15, 25, we can look for a pattern among the numbers. The differences between consecutive numbers are +7, -4, 0, +3, -7, +10. The next difference appears to be -6, which would lead to the next number being 25 - 6 = 19. Therefore, the next number in the series is 19.
It is 23
The first number in that series is 19. That series is part of a larger series that starts with 2.
15 is composite number 17, 19 and 23 are prime numbers.
19 and 23 are prime.
It is 23 followed by 29
19 + (44 + 23) = (19 + 44) + 23
Since the two number are coprime, the answer is 23*19 = 437
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
If you're working with (23 + 5), then you'll work long and hard and still never find a way to get 19. There are none. The sum of 23 and 5 is 28, and if you get any other number, then you've added 23 to 5 incorrectly.
23
19+17+23+17=76 76/4 (the number of numbers) = 19
19, 20, 21, 22, 23