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Old 2020-11-23, 23:34   #684
VBCurtis
 
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"Curtis"
Feb 2005
Riverside, CA

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Squaring the 31 is the manner in which one breaks 2^4 * 31.
Other powers of 2 would not be a driver; only the perfect number 496 = 2^4 * 31 is a driver.
I believe the same is true for the other perfect numbers: Square the 3 or 7 or 127 to escape.
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