70th chen prime is 521

70th chen prime is 521.

521 is 70th chen prime.

Learn more about Chen primes.

Neighbours#

419₇	431₁₁	443₁₀	449₁₀	461₁₃
467₁₁	479₇	487₁₁	491₈	499₇
503₁₀	509₁₀	521₇	541₁₀	557₁₀
563₁₃	569₉	571₈	577₁₂	587₉
599₁₁	617₁₀	631₇	641₁₅	647₁₆

Compare with#

419₇	431₁₁	443₁₀	449₁₀	461₁₃
467₁₁	479₇	487₁₁	491₈	499₇
503₁₀	509₁₀	521₇	541₁₀	557₁₀
563₁₃	569₉	571₈	577₁₂	587₉
599₁₁	617₁₀	631₇	641₁₅	647₁₆

Learn more about Chen primes
Check first 100 chen primes
Check chen primes up to 1000
Check all chen primes

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