Compare 640631 vs 640639

Property	640631	640639
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	640631¹	29¹ × 22091¹
Prime factorization	640631	29 × 22091
Divisors count	2	4
Divisors	1, 640631	1, 29, 22091, 640639
Number of properties	3	1
Isolated primes	40849th
Primes	52122nd
Semiprimes		137280th
Sophie germain primes	5310th
Roman numberals
Base 2	10011100011001110111₂	10011100011001111111₂
Base 3	1012112210002₃	1012112210101₃
Base 4	2130121313₄	2130121333₄
Base 5	131000011₅	131000024₅
Base 6	21421515₆	21421531₆
Base 7	5305505₇	5305516₇
Base 8	2343167₈	2343177₈
Base 9	1175702₉	1175711₉
Base 10	640631₁₀	640639₁₀
Base 11	3a8352₁₁	3a835a₁₁
Base 12	26a89b₁₂	26a8a7₁₂
Base 13	195794₁₃	19579c₁₃
Base 14	129675₁₄	12967d₁₄
Base 15	c9c3b₁₅	c9c44₁₅
Base 16	9c677₁₆	9c67f₁₆