λ
Sequence Observatory

1,655,146

2 × 29 × 28537
Deficient Even Composite

Starting at 1,655,146, the Collatz iteration reaches 1 after 145 steps. The first transition is 827573; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 29 × 28537
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,568,420
Proper Divisor Sum 913,274
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #1655141 ← → #1655153

Radix Representation

Decimal 1655146
Binary 110010100000101101010 (21 bits)
Octal 0o6240552
Hexadecimal 0x19416A

Divisor Catalog (8)

1 2 29 58 28,537 57,074 827,573 1,655,146

Collatz Trajectory (145 steps to reach 1)

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

1,655,146 827,573 2,482,720 1,241,360 620,680 310,340 155,170 77,585 232,756 116,378 58,189 174,568 87,284 43,642 21,821 65,464 32,732 16,366 8,183 24,550 12,275 36,826 18,413 55,240 27,620 13,810 6,905 20,716 10,358 5,179 15,538 7,769 23,308 11,654 5,827 17,482 8,741 26,224 13,112 6,556 3,278 1,639 4,918 2,459 7,378 3,689 11,068 5,534 2,767 8,302 4,151 12,454 6,227 18,682 9,341 28,024 14,012 7,006 3,503 10,510

More profiles

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