Compare 991987 vs 991988

Property	991987	991988
Type	prime	composite number
Unique factors	1	2
Total factors	1	3
Prime factorization	991987¹	2² × 247997¹
Prime factorization	991987	2 × 2 × 247997
Divisors count	2	6
Divisors	1, 991987	1, 2, 4, 247997, 495994, 991988
Number of properties	4	0
Additive primes	29906th
Isolated primes	61701st
Primes	77926th
Sexy primes (2nd member)	16280th
Roman numberals
Base 2	11110010001011110011₂	11110010001011110100₂
Base 3	1212101202021₃	1212101202022₃
Base 4	3302023303₄	3302023310₄
Base 5	223220422₅	223220423₅
Base 6	33132311₆	33132312₆
Base 7	11301043₇	11301044₇
Base 8	3621363₈	3621364₈
Base 9	1771667₉	1771668₉
Base 10	991987₁₀	991988₁₀
Base 11	618327₁₁	618328₁₁
Base 12	3ba097₁₂	3ba098₁₂
Base 13	289699₁₃	28969a₁₃
Base 14	1bb723₁₄	1bb724₁₄
Base 15	148dc7₁₅	148dc8₁₅
Base 16	f22f3₁₆	f22f4₁₆