2357 + 8789 = 11,146
879 + 1478 = 2357
It is: 2357+100 = 2457
All of them except 2357 which is a prime number
This one is pretty easy. You have either the wrong bulb installed, it should be a #1157 not a #2357 which is a common mistake. The other possiblility is you have the bulb in backwords.
2357
25,927
48.549 (rounded)
210
2,358
2357
2357