What is the longest snake?

This species is the largest snake native to Asia. More than a thousand wild reticulated pythons in southern Sumatra were studied and estimated to have a length range of 1.5 to 6.5 m (4.9 to 21.3 ft) and a weight range of 1 to 75 kg (2.2 to 165.3 lb). Reticulated pythons with lengths more than 6 m (19.7 ft) are rare, though according to the Guinness Book of World Records, it is the only extant snake to regularly exceed that length. A reticulated python of the same length as a green anaconda may weigh only half as much as the bulkier anaconda.