Compare 661 vs 743

Unique factors11
Total factors11
Prime factorization66117431
Prime factorization661743
Divisors count22
Divisors1, 6611, 743
Number of properties58
Additive primes65th 
Centered decagonal primes8th 
Chen primes 89th
Cousin primes (2nd member) 31st
Emirps 25th
Isolated primes 73rd
Left-truncatable primes 43rd
Long primes 48th
Pythagorean primes57th 
Sophie germain primes 33rd
Twin primes (2nd member)30th 
Roman numberalsDCLXIDCCXLIII
Base 21010010101210111001112
Base 3220111310001123
Base 4221114232134
Base 5101215104335
Base 63021632356
Base 71633721117
Base 81225813478
Base 9814910159
Base 106611074310
Base 115511161611
Base 124711251b12
Base 133bb1345213
Base 14353143b114
Base 152e11534815
Base 16295162e716
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