shafiq81
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| Joined: 13 Jan 2012 |
| Total Posts: 19784 |
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| 28 Mar 2014 06:32 AM |
Fifty-two is the 6th Bell number and a decagonal number. It is an untouchable number, since it is never the sum of proper divisors of any number, and it is a noncototient since it is never the answer to the equation x - φ(x).
★ Eᴠᴇʀ ᴡᴏɴᴅᴇʀᴇᴅ ᴡʜᴀᴛ ʜᴀᴘᴘᴇɴᴇᴅ ᴛᴏ ᴛʜᴇ ᴏᴛʜᴇʀ 80 sʜᴀғɪǫs? Mʏsᴛᴇʀɪᴏᴜs ᴅɪsᴀᴘᴘᴇᴀʀᴀɴᴄᴇs. ★ |
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