Nichito I do not know where you are getting your numbers from but #76 is also wrong, by one digit. I checked with two sources, a program and website and they both say that 8944394323791464 is the correct number. After that comes 14472334024676221.
bumsfeld is right, it is because of a lack of gravitational pull. However anti-gravity is very likely to be impossible. What it could be is a force that overcomes gravity, not eliminate's but is stronger than gravity. On earth with a strong enough magnet you can make a frog float so a force could be overcoming gravity in that area. It could mask gravity from our instruments, making it seem like nothing is there. This force could also possibly not be recognized with our instrumnts.
Someone made a mistake somewhere because a few of the current posts are wrong. I will use #70 as the correction point. It should have been 308061521170129, very close but not exact, then comes 498454011879264. After that the number 806515533049393.
Dark matter has been found in space due to it's gravitational attraction it has on galaxies. There is no "normal" matter in those area's so that is where dark matter is found. Dark energy however has no evidence supporting it and is just and idea scientists had. And do not forgot anti-matter which is different from dark matter and has been created in labs on earth. Ene Uran needs to get his facts straight.
