ぃ琌计琾计
琾计 (Almost Prime) 琌计┪计 (Prime Divisor) (┪ぃ) 计单﹚计
Ω琾计 (2-almost Prime) 琌计ヘ 2 俱计 4101533123单常琌
琾计瞷﹍ǎ╯紈ぺ划瞦稱 (Goldbach Conjecture) 拜肈紈ぺ划瞦稱琌ぃぶ 6 案计 糶Θㄢ计㎝и瓣计厩產硂拜肈ǐ程玡ㄤい朝春柬 (Jingrun Chen 1933-1996) 皘矗の谍计糶Θ计のぃㄢ琾计㎝硂ョ琌и竒盽ē矗1+2癘├朝春柬癪膍嘿赣挡狦朝ん﹚瞶 (Chen's Theorem)
Ω琾计 (1-almost Prime) | 23571113171923293137...... | OEISA000040 | 虏癘 P |
Ω琾计 (2-almost Prime) | 469101415212225263334...... | OEISA001358 | 虏癘 P2 |
Ω琾计 (3-almost Prime) | 812182027283042444550...... | OEISA014612 | 虏癘 P3 |
Ω琾计 (4-almost Prime) | 1624364054566081848890...... | OEISA014613 | 虏癘 P4 |
きΩ琾计 (5-almost Prime) | 32487280108112120162168180...... | OEISA014614 | 虏癘 P5 |
ㄤいΩ琾计嘿计 (Semiprime)и甧璶 k Ω琾计い计獽琌 k+1 Ω琾计タир甁┰Λ吹疭ェ縵猭 (Sieve of Eratosthenes)э碝т琾计ㄣよ猭琌玂痙 235硂ㄇ计ぃрㄤ计奔э奔 4610硂ㄇΩ琾计计獽穦逞Ω琾计摸崩
把σゅ膍の呼
Weisstein, E. M. "Almost Prime." From MathWorld. http://mathworld.wolfram.com/AlmostPrime.html.