Compare 666649 vs 666661

Property	666649	666661
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	666649¹	379¹ × 1759¹
Prime factorization	666649	379 × 1759
Divisors count	2	4
Divisors	1, 666649	1, 379, 1759, 666661
Number of properties	6	1
Additive primes	21105th
Primes	54069th
Prime triplets (3rd member)	2130th
Semiprimes		142598th
Sexy primes (2nd member)	11668th
Sexy prime triplets (3rd member)	2126th
Twin primes (2nd member)	5837th
Roman numberals
Base 2	10100010110000011001₂	10100010110000100101₂
Base 3	1020212110201₃	1020212111011₃
Base 4	2202300121₄	2202300211₄
Base 5	132313044₅	132313121₅
Base 6	22142201₆	22142221₆
Base 7	5444404₇	5444422₇
Base 8	2426031₈	2426045₈
Base 9	1225421₉	1225434₉
Base 10	666649₁₀	666661₁₀
Base 11	415955₁₁	415966₁₁
Base 12	281961₁₂	281971₁₂
Base 13	1a4589₁₃	1a4598₁₃
Base 14	134d3b₁₄	134d49₁₄
Base 15	d27d4₁₅	d27e1₁₅
Base 16	a2c19₁₆	a2c25₁₆