λ
Sequence Observatory

1,977,571

1977571
Deficient Odd Prime

Starting at 1,977,571, the Collatz iteration reaches 1 after 65 steps. The first transition is 5932714; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 1977571
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 1,977,572
Proper Divisor Sum 1
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #1977557 ← → #1977581

Radix Representation

Decimal 1977571
Binary 111100010110011100011 (21 bits)
Octal 0o7426343
Hexadecimal 0x1E2CE3

Divisor Catalog (2)

Collatz Trajectory (65 steps to reach 1)

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

1,977,571 5,932,714 2,966,357 8,899,072 4,449,536 2,224,768 1,112,384 556,192 278,096 139,048 69,524 34,762 17,381 52,144 26,072 13,036 6,518 3,259 9,778 4,889 14,668 7,334 3,667 11,002 5,501 16,504 8,252 4,126 2,063 6,190 3,095 9,286 4,643 13,930 6,965 20,896 10,448 5,224 2,612 1,306 653 1,960 980 490 245 736 368 184 92 46 23 70 35 106 53 160 80 40 20 10

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