Strobogrammatic number Strobogrammatic number A strobogrammatic number is a number whose numeral is rotationally symmetric, so that it appears the same when rotated 180 degrees. In other words, the numeral looks the same right-side up and upside down (e.g., 69, 96, 1001). A strobogrammatic prime is a strobogrammatic number that is also a prime number, i.e., a number that is only divisible by one and itself (e.g., 11). It is a type of ambigram, words and numbers that retain their meaning when viewed from a different perspective, such as palindromes. When written using standard characters (ASCII), the numbers, 0, 1, 8 are
Number 1 to Infinity clarity, and agility with ease". "#1 to Infinity" debuted at number 29 on the US "Billboard" 200 chart on June 6, 2015, selling 15,000 copies in its first week, marking the ninth highest debut of the week and the tentieth best-selling album of the week. It became her twentieth album to make the chart. Her eponymous album had debuted at number 80 twenty-five years prior in 1990 and later became her first of six number-one albums in 1991. "#1 to Infinity" peaked at number 2 on the Top R&B/Hip-Hop Albums chart<ref name="Top R&B/Hip-Hop Albums"></ref><ref name="Top R&B/Hip-Hop Albums Chart History"></ref> and