λ
Sequence Observatory

1,385,758

2 × 11 × 62989
Deficient Even Composite

Starting at 1,385,758, the Collatz iteration reaches 1 after 305 steps. The first transition is 692879; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 11 × 62989
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,267,640
Proper Divisor Sum 881,882
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #1385753 ← → #1385767

Radix Representation

Decimal 1385758
Binary 101010010010100011110 (21 bits)
Octal 0o5222436
Hexadecimal 0x15251E

Divisor Catalog (8)

1 2 11 22 62,989 125,978 692,879 1,385,758

Collatz Trajectory (305 steps to reach 1)

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

1,385,758 692,879 2,078,638 1,039,319 3,117,958 1,558,979 4,676,938 2,338,469 7,015,408 3,507,704 1,753,852 876,926 438,463 1,315,390 657,695 1,973,086 986,543 2,959,630 1,479,815 4,439,446 2,219,723 6,659,170 3,329,585 9,988,756 4,994,378 2,497,189 7,491,568 3,745,784 1,872,892 936,446 468,223 1,404,670 702,335 2,107,006 1,053,503 3,160,510 1,580,255 4,740,766 2,370,383 7,111,150 3,555,575 10,666,726 5,333,363 16,000,090 8,000,045 24,000,136 12,000,068 6,000,034 3,000,017 9,000,052 4,500,026 2,250,013 6,750,040 3,375,020 1,687,510 843,755 2,531,266 1,265,633 3,796,900 1,898,450

More profiles

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