Compare 991987 vs 991991

Property	991987	991991
Type	prime	composite number
Unique factors	1	4
Total factors	1	4
Prime factorization	991987¹	7¹ × 11¹ × 13¹ × 991¹
Prime factorization	991987	7 × 11 × 13 × 991
Divisors count	2	16
Divisors	1, 991987	1, 7, 11, 13, 77, 91, 143, 991, 1001, 6937, 10901, 12883, 76307, 90181, 141713, 991991
Number of properties	4	0
Additive primes	29906th
Isolated primes	61701st
Primes	77926th
Sexy primes (2nd member)	16280th
Roman numberals
Base 2	11110010001011110011₂	11110010001011110111₂
Base 3	1212101202021₃	1212101202102₃
Base 4	3302023303₄	3302023313₄
Base 5	223220422₅	223220431₅
Base 6	33132311₆	33132315₆
Base 7	11301043₇	11301050₇
Base 8	3621363₈	3621367₈
Base 9	1771667₉	1771672₉
Base 10	991987₁₀	991991₁₀
Base 11	618327₁₁	618330₁₁
Base 12	3ba097₁₂	3ba09b₁₂
Base 13	289699₁₃	2896a0₁₃
Base 14	1bb723₁₄	1bb727₁₄
Base 15	148dc7₁₅	148dcb₁₅
Base 16	f22f3₁₆	f22f7₁₆