1 + 14 2 + 13 3 + 12 4 + 11 5 + 10 6 + 9 7 + 8
All except 15
15 and 5
19 and 11 are the two prime numbers that equal to 209.
13-2 = 11
1 + 14 2 + 13 3 + 12 4 + 11 5 + 10 6 + 9 7 + 8
17
All except 15
15 and 5
19 and 11 are the two prime numbers that equal to 209.
13-2 = 11
By the uniqueness of numbers, there is no other number that is equal to 30.
11 and 18
15
The prime numbers (factors) of 44 are: 2 and 11
They are -3 and -5
2, 3, 5, 7 and 11.