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
Infinity on High tours to promote the album, including the Friends or Enemies Tour, the Honda Civic Tour, and the Young Wild Things Tour. In the wake of the album's leak on the internet, the band included a download code for "Leaked in London", a live extended play, with each purchase made during the first week of its initial release. "Infinity on High" debuted at number one on the U.S. "Billboard" 200, selling 260,000 copies in its first week, making it Fall Out Boy's first number one album and second top ten effort. It also reached number one in New Zealand and opened