# bgins

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My gmail.com address begins with a word found by cyclicly extending my display name here ('bgins') to the next prime length, or from the sequence of digits ($a_i$), interpreted as letter numbers, found by converting $2751020930=\sum a_i b^i$ to base $b=27$, for example with sage:

''.join([chr(ord('a')+_-1) for _ in 2751020930.digits(base=27)])


 23 value of $1+\frac{1}{1+2}+\frac{1}{1+2+3}+\frac{1}{1+2+3+4}+\frac{1}{1+2+3+4+5}+\cdots$? 17 Largest circle between $y=x^n$ and $y=\sqrt[n]{x}$ 13 How to solve an exponential equation with two different bases: $3^x - 2^x = 5$ 11 The $n^{th}$ root of the geometric mean of binomial coefficients. 10 Quadratic equation -> matrix?

# 6,521 Reputation

 +10 value of $1+\frac{1}{1+2}+\frac{1}{1+2+3}+\frac{1}{1+2+3+4}+\frac{1}{1+2+3+4+5}+\cdots$? +10 Simplifying exponents (How does $(2^6 + 2^3)(2^6-2^3)$ get created from $(2^6)^2 - (2^3)^2$ +45 Irrational numbers in between $n$ and $n+1$ +10 Integrating using the residue theorem

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# 116 Tags

 64 calculus × 25 36 sequences-and-series × 6 61 algebra-precalculus × 17 35 elementary-number-theory × 12 45 integration × 14 35 polynomials × 10 39 geometry × 16 33 combinatorics × 14 36 probability × 21 30 trigonometry × 12

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 Mathematics 6,521 rep 819 Stack Overflow 128 rep 5 Super User 101 rep 2 TeX - LaTeX 101 rep 2 English Language & Usage 101 rep 1

 Yearling × 3 Nice Answer × 6 Custodian Autobiographer Revival × 3 Necromancer Explainer Constituent Enlightened × 2 Caucus

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