In particular, they have demonstrated that, on average, there are as many prime Numbers for which the sum of decimal digits is even as prime Numbers for which it is odd.

特别地，他们证明了在平均的意义上，各位数字和是偶数的素数跟数字和是奇数的素数一样多。

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ScienceDaily (May 13, 2010) - On average, there are as many prime Numbers for which the sum of decimal digits is even as prime Numbers for which it is odd.

(2010年5月13日)—平均而言，各位上数字和是偶数的素数跟数字和是奇数的素数一样多。

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MOST commonly, a digit that arises when the sum or product of two or more digits equals or exceeds the radix of the number representation system.

最常用的是指当两个或多个数的和或积等于或大于记数系统的基数时出现的进位数。

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He later sold it to Labatt Breweries of Canada for an undisclosed sum (somewhere in the seven digits, he says).

FORBES: Magazine Article

Each sum, which was either addition, subtraction, multiplication or division, was limited to two numbers of one or two digits.

BBC: NEWS | UK | Scotland | Edinburgh, East and Fife | Pupil second in world maths test