Compare 661679 vs 661681

Property	661679	661681
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	661679¹	131¹ × 5051¹
Prime factorization	661679	131 × 5051
Divisors count	2	4
Divisors	1, 661679	1, 131, 5051, 661681
Number of properties	6	1
Chen primes	21001st
Happy primes	7612th
Isolated primes	42111th
Primes	53696th
Safe primes	3101st
Semiprimes		141585th
Sexy primes (2nd member)	11595th
Roman numberals
Base 2	10100001100010101111₂	10100001100010110001₂
Base 3	1020121122122₃	1020121122201₃
Base 4	2201202233₄	2201202301₄
Base 5	132133204₅	132133211₅
Base 6	22103155₆	22103201₆
Base 7	5424044₇	5424046₇
Base 8	2414257₈	2414261₈
Base 9	1217578₉	1217581₉
Base 10	661679₁₀	661681₁₀
Base 11	412147₁₁	412149₁₁
Base 12	27aabb₁₂	27ab01₁₂
Base 13	1a2235₁₃	1a2237₁₃
Base 14	1331cb₁₄	1331cd₁₄
Base 15	d10be₁₅	d10c1₁₅
Base 16	a18af₁₆	a18b1₁₆