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Natural number
911 (nine hundred [and] eleven) is the integer following 910 and preceding 912.
It is a prime number, a Sophie Germain prime, and the sum of three consecutive primes (293 + 307 + 311). It is an Eisenstein prime with no imaginary part and real part of the form 3 n − 1 {\displaystyle 3n-1} . Since 913 is a semiprime, 911 is a Chen prime. It is also a centered decagonal number.[1]
There are 911 inverse semigroups of order 7 (sequence A001428 in the OEIS)
911 is obtained by concatenating its product of digits and sum of digits.
Integers −1 0s 100s 200s 300s 400s 500s 600s 700s 800s 900s 1000sRetroSearch is an open source project built by @garambo | Open a GitHub Issue
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