The pattern is add three and then multiply by three. The next number is 174.
174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
171 - 38 = 133 so 133 + 38 sum to 171
131 all have odd numbers, so does 151 and 171. i would say 161 is the one that doesn't belong because it has an even number in it.
15
the next two are 174 and 522.
174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
You need at least two numbers to find a GCF.
171 is not a prime number. These numbers go evenly into 171: 1 3 9 19 57 171.
171
171 = 171/1 and 109 = 109/1 are fractional representations of the numbers.
The numbers are: (-12+square root of 171) and (-12-square root of 171)
The multiples of 171 (which are infinite) are all divisible by 171 , including these: 171, 342, 513, 684, 855, 1026, 1197, 1368, 1539 . . .
171 - 38 = 133 so 133 + 38 sum to 171
171
The numbers 1, 3 and 9 all go into both 72 and 171.
No. They are both composite numbers. They are not relatively prime either.
If you include 8 and 171, there would be 171-8+1 = 164 If you dont include both, it would be2 less -> 162