3, 5 and 7 are prime numbers but 8 is not a prime number. Another prime number, 2 cubed is 8. When 8 is rotated by 90 (3 x 3 x 2 x 5) degrees, it becomes the symbol of infinity. 素数と無限大 3, 5 , 7 は素数である

3 is a symbol of the stability. 5 is a symbol of five elements. 7 is a symbol of good fortune. 8 is a symbol of infinite happiness. それぞれの数字が特別な意味を持っています。3は安定性の象徴。5は五大要素。7は幸運。8は末広がりの象徴です。