Here are the biggest revelations from Comey's memos

According to Comey, Trump complained about former national security adviser Mike Flynn by saying "the guy has serious judgment issues."

During a dinner, Trump recalled a conversation where Flynn had not properly informed him of a congratulatory call from a world leader after his inauguration.

"In telling the story, the President pointed his fingers at his head and said 'the guy has serious judgment issues,'" Comey said in the memo.

Comey wrote that he and Trump discussed a salacious rumor that Trump allegedly entertained prostitutes and witnessed a sexual act while in a Moscow Ritz-Carlton hotel room in 2013.

"The President said 'the hookers thing' is nonsense," Trump said at the time, according to Comey, "but that Putin had told him 'we have some of the most beautiful hookers in the world."

Comey qualified his account and said that Trump "did not say where Putin had told him this."

In another conversation, Comey wrote that Trump had broached the subject of a controversial interview he gave to former Fox News host Bill O'Reilly.

In the interview, Trump said he respected Russian President Vladimir Putin and waved off the host's characterization of Putin as a "killer."

"There are a ton of killers," Trump said during the interview. "We've got a lot of killers. What do you think? Our country's so innocent?"

Trump's response was immediately rebuked by US officials across the political spectrum, but Comey said that Trump did not see his words as controversial.

"He said he does respect the leader of a major country and thought that was the best answer," Comey wrote. "He then said, 'You think my answer was good, right?'"

"I said the answer was fine, except the part about killers, because we aren't the kind of killers that Putin is," Comey continued in his memo. "When I said this, the President paused noticeably. I don't know what to make of it, but he clearly noticed I had directly criticized him."

Trump was so bothered by the number of leaks to news organizations, including his classified phone calls with foreign leaders, that "he replied that we need to go after the reporters," Comey wrote in the memo.

Comey, who also agreed that "about the leaks being terrible," wrote that Trump touched the phone on the desk and said he assumed that the calls made on 'this beautiful phone,' were confidential.

Trump then alluded to a time when "we put them in jail to find out what they know, and it worked," Comey wrote.

"I explained that I was a fan of pursuing leaks aggressively but that going after reporters was trick, for legal reasons and because DOJ tends to approach it conservatively," Comey said in the memo.

According to Comey's recollection, Trump said: "They spend a couple days in jail, make a new friend, and they are ready to talk."

Comey wrote that he "laughed" at the comment.