What's the real tally behind the Rolling Stones' legendary rock 'n' roll lifestyles?

How many is too many to count? According to a new biography, the Rolling Stones once sat down to answer that very question about their legendary offstage lives.

In his book "The Rolling Stones: The Biography," author Bob Spitz claims the band members once tallied their sexual conquests. The alleged numbers, shared by Spitz with Fox News Digital, are eye-opening. He states that bassist Bill Wyman "stopped counting at about 1,800," having kept a detailed journal. Frontman Mick Jagger reportedly estimated his total was in the hundreds. Guitarist Keith Richards, however, allegedly counted just four.

"The Stones have always been known for their offstage behavior," Spitz told Fox News Digital. "They got together at one point — when they were older men — Bill Wyman, Keith Richards and Mick Jagger — to decide how many women they had slept with over the years. A shocking number."

If true, the figures flip the script on the band's long-held bad-boy image, suggesting its most notorious outlaw, Richards, was perhaps its most romantic. According to Spitz's account, Wyman was described as the group's "unrivaled p—-hound," and it seems he had a rule about never sleeping alone. "Every night, he scouted the most beautiful young women standing closest to the stage. He would point out one or two, and one of the roadies would invite them backstage," Spitz said.

Fox News Digital noted it reached out to a Rolling Stones spokesperson for comment. Richards has never publicly quantified his partners, instead focusing in interviews and his memoir "Life" on the significant relationships in his life, like those with Anita Pallenberg and his wife, Patti Hansen. He has reportedly stated that drugs and music were his primary preoccupations, not chasing women.

Spitz's book reportedly positions Wyman, the oldest and initially the only married Stone, as the one who "let loose" the most upon joining the band. The alleged tally offers a new, quantified perspective on the hedonistic mythology that has surrounded the world's greatest rock 'n' roll band for over six decades.