λ
Sequence Observatory

6,806,861

41 × 166021
Deficient Odd Composite

Starting at 6,806,861, the Collatz iteration reaches 1 after 160 steps. The first transition is 20420584; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 41 × 166021
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 6,972,924
Proper Divisor Sum 166,063
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #6806837 ← → #6806893

Radix Representation

Decimal 6806861
Binary 11001111101110101001101 (23 bits)
Octal 0o31756515
Hexadecimal 0x67DD4D

Divisor Catalog (4)

1 41 166,021 6,806,861

Collatz Trajectory (160 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

6,806,861 20,420,584 10,210,292 5,105,146 2,552,573 7,657,720 3,828,860 1,914,430 957,215 2,871,646 1,435,823 4,307,470 2,153,735 6,461,206 3,230,603 9,691,810 4,845,905 14,537,716 7,268,858 3,634,429 10,903,288 5,451,644 2,725,822 1,362,911 4,088,734 2,044,367 6,133,102 3,066,551 9,199,654 4,599,827 13,799,482 6,899,741 20,699,224 10,349,612 5,174,806 2,587,403 7,762,210 3,881,105 11,643,316 5,821,658 2,910,829 8,732,488 4,366,244 2,183,122 1,091,561 3,274,684 1,637,342 818,671 2,456,014 1,228,007 3,684,022 1,842,011 5,526,034 2,763,017 8,289,052 4,144,526 2,072,263 6,216,790 3,108,395 9,325,186

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