What's the world record for longest time having sex?

There are sites claiming they've gathered the following information:

1. The longest sex act was performed by a couple of rattlesnakes (Crotalus L.) that were making love for 23 hours and 15 minutes.

2. Doctor Vernon Coleman registered the longest sex act, which lasted for 15 hours. The record was set by movie star Mae West and her lover, known only as Ted.

In The Guinness World Records for the most frequent sex, the male scaly cricket Ornebius aperta from Australia can copulate more than 50 times in three to four hours, all with the same female. Studies reveal that each time a male mates, a bag of spermatozoa is placed on the female which she immediately eats. The spermatozoa is an extremely nutritious food for the female cricket which is why she devours it so eagerly. By comparison, female chimpanzees have been recorded copulating with eight different males in 15 minutes. A lioness in heat has sex once every half an hour for four or five days/nights.

Speaking of long, MLB's longest home run blasts of the week was a tie between Angels left fielder Mark Trumbo and Cubs first baseman Anthony Rizzo. They each hit 475-foot bombs earlier this year.