2.34 = 217/50
2.85 = 217/20
2.85 = 217/20
268% = 268/100 = 217/25
7.868 = 7 868/1000 = 7 217/250
217 = 11011001
217 isn't prime. It's factors are 1,7,31 and 217.
217 is not a prime number. 7 and 31 are factors of 217 besides one and itself.
217 is an Illinois number
1, 7, 31, 217
Besides 1 and 217, 7 and 31
7 and 31 go into 217 evenly.