"The government does not take a position with respect to a particular sentence to be imposed, but respectfully submits that a sentence of incarceration within the applicable guidelines range of zero to six months imprisonment is appropriate and warranted", Mr Mueller's memorandum to the judge in the case says.
The former Trump campaign staffer pleaded guilty last October to one count of lying to investigators over his interactions about the Trump campaign with foreign contacts who had connections to Russian Federation. He is scheduled to be sentenced on September 7.
Mueller said in the filing that Papadopoulos lied about his interactions with a suspected Russian agent, described in the filing as "the professor".
Breen and Stanley at the time issued a statement saying, "The most accurate account of Mr. Papadopoulos' plea agreement and plea of guilty is contained in the publicly filed court records and the transcript of Mr. Papadopoulos' guilty plea".
That's despite the fact prosecutors said Papadopoulos did not provide "substantial assistance" after his guilty plea.
"Mueller's sentencing memo says that Papadopoulos" crime was serious, and that his lies damaged the government's investigation.
They included a London-based professor who said Russian Federation had "dirt" on Democratic presidential candidate Hillary Clinton.
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They said Papadopoulos" initial lies hindered investigators' ability to effectively question, challenge or detain a London professor who Papadopoulos said first told him that Russians had "dirt " on Hillary Clinton in the form of emails. Mueller's team said in their Friday filing that that early interview, part of a national security investigation, was "completely voluntary". "He lied repeatedly over the course of more than two hours, and his lies were created to hide facts he knew were critical".
Papadopoulos did, however, refer to the Russian dirt during a conversation he had in a London bar in May 2016 with the senior Australian diplomat in Britain.
Papadopoulos' lawyer Thomas Breen said Friday night that he was unable to comment at this time and would respond through the court record in their own pre-sentencing memo, which must be filed by August 31.
According to that indictment, by April 2016, the Russian intelligence operatives had already stolen emails from several Democratic groups including the Clinton campaign and were beginning to plan how they were going to release the documents.
The sentence recommendation comes as Simona Mangiante Papadopoulos, the wife of the one-time foreign policy adviser, has mounted the latest in a series of publicity campaigns - this one suggesting her husband has misgivings about his plea agreement.
"Had the defendant told the Federal Bureau of Investigation the truth when he was interviewed in January 2017, the Federal Bureau of Investigation could have quickly taken numerous investigative steps to help determine, for example, how and where the Professor obtained the information, why the Professor provided the information to the defendant, and what the defendant did with the information after receiving it", the filing said.