Compare 640949 vs 640961

Property	640949	640961
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	640949¹	281¹ × 2281¹
Prime factorization	640949	281 × 2281
Divisors count	2	4
Divisors	1, 640949	1, 281, 2281, 640961
Number of properties	5	1
Happy primes	7420th
Isolated primes	40871st
Primes	52146th
Semiprimes		137342nd
Sexy primes (2nd member)	11299th
Sophie germain primes	5314th
Roman numberals
Base 2	10011100011110110101₂	10011100011111000001₂
Base 3	1012120012212₃	1012120020022₃
Base 4	2130132311₄	2130133001₄
Base 5	131002244₅	131002321₅
Base 6	21423205₆	21423225₆
Base 7	5306441₇	5306456₇
Base 8	2343665₈	2343701₈
Base 9	1176185₉	1176208₉
Base 10	640949₁₀	640961₁₀
Base 11	3a8611₁₁	3a8622₁₁
Base 12	26ab05₁₂	26ab15₁₂
Base 13	19597a₁₃	195989₁₃
Base 14	129821₁₄	12982d₁₄
Base 15	c9d9e₁₅	c9dab₁₅
Base 16	9c7b5₁₆	9c7c1₁₆