Just be aware that the differences in number between the numbers you gentlemen mention are all based on different engines...
There is a tremendous amount of difference (and effect on 747 yaw to be counteracted with the rudder) between a JT9D-7 and a JT9D-7R4G2. Same story between CF6-45A and CF6-80EC2 or RB211-524B and a RB211-524G...
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On the engines cited above, the thrust varies between 46,000 lbs and 58,000 lbs. I have seen minimum V1 speeds (VmcG) varying between 114 and 130 KIAS depending on type of engine (thrust). There is NO "standard" number which can be memorized. And again, if not sure, being conservative, I add or substract "1 or 2 knots" when necessary.
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Happy contrails