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Omni-MATH / Find the least positive integer N>1 satisfying the following two properties: There exists a positive integer a such that N=a(2a−1). The sum 1+2+⋯+(N−1) is divisible by k for every … · Discussion

Discussing Find the least positive integer N>1 satisfying the following two properties: There exists a positive integer a such that N=a(2a−1). The sum 1+2+⋯+(N−1) is divisible by k for every … · Omni-MATH

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