Compare 121991 vs 121997

Property	121991	121997
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	43¹ × 2837¹	121997¹
Prime factorization	43 × 2837	121997
Divisors count	4	2
Divisors	1, 43, 2837, 121991	1, 121997
Number of properties	1	8
Additive primes		4722nd
Chen primes		4978th
Cousin primes (2nd member)		1430th
Isolated primes		8594th
Left-truncatable primes		348th
Primes		11475th
Pythagorean primes		5707th
Restricted left-truncatable primes		32nd
Semiprimes	28271st
Roman numberals
Base 2	11101110010000111₂	11101110010001101₂
Base 3	20012100012₃	20012100102₃
Base 4	131302013₄	131302031₄
Base 5	12400431₅	12400442₅
Base 6	2340435₆	2340445₆
Base 7	1015442₇	1015451₇
Base 8	356207₈	356215₈
Base 9	205305₉	205312₉
Base 10	121991₁₀	121997₁₀
Base 11	83721₁₁	83727₁₁
Base 12	5a71b₁₂	5a725₁₂
Base 13	436ac₁₃	436b5₁₃
Base 14	32659₁₄	32661₁₄
Base 15	2622b₁₅	26232₁₅
Base 16	1dc87₁₆	1dc8d₁₆