105

This number is a composite.

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105/π⁴ = (1 + 1/2⁴)(1 + 1/3⁴)(1 + 1/5⁴)(1 + 1/7⁴)(1 + 1/11⁴) … . [Ramanujan]

Submitted: 1999-09-02 23:40:00; Last Modified: 2021-04-11 15:18:10.