No, 2 is not a factor of 309 because it does not evenly divide into 309. The factors of 309 are 1, 3, 103, and 309.
215
Eventually
The GCF is 3.
103
3% of 10000000000000 = 3% * 10000000000000 = 0.03 * 10000000000000 = 300,000,000,000
10000000000000 = 10,000,000,000,000
4-10000000000000 = -9999999999996
10000000000000-3747577 = 9999996252423
100 + 10000000000000 = 10000000000100
32732.2719
100000 times 10000000000000 is 1,000,000,000,000,000,000
2 percent of 10000000000000 = 200000000000
If you write it out, you get 10000000000000 digits, so you really can't write it out; so you should just leave it as 10 to the power 10000000000000.
10000000000000
10000000000000
10 Trillion.